Proficiency Testing Scheme for Water Analysis - Cooperation IFA
Transcription
Proficiency Testing Scheme for Water Analysis - Cooperation IFA
Proficiency Testing Scheme for Water Analysis Round N131 Major Ions Sample Dispatch:14 March 2016 University of Natural Resources and Life Sciences, Vienna Address: University of Natural Resources and Life Sciences, Vienna Department of Agrobiotechnology IFA-Tulln Center for Analytical Chemistry Head: Prof. Dr. Rudolf Krska Konrad-Lorenz-Str. 20 3430 Tulln Austria Website: www.ifatest.eu www.ifa-tulln.ac.at www.boku.ac.at Telephone/Fax: +43 2272 66280 - Ext +43 2272 66280 - 403 Proficiency Testing (PT) Scheme: Lab Manager: Dr. Wolfgang Kandler Ext 408 [email protected] Ing. Uta Kachelmeier Dipl.-HTL-Ing. Andrea Koutnik Ing. Caroline Stadlmann Ext 461 Ext 406 Ext 406 [email protected] [email protected] [email protected] This report summarises the results of round N131 (major ions) within the IFA-Test Proficiency Testing Scheme for Water Analysis. The samples N131A and N131B were distributed to the participants on Monday, 14 March 2016. Closing date for reporting results to the IFA-Tulln was Friday, 8 April 2016. 68 laboratories participated in this interlaboratory comparison. All participants submitted results. Samples The samples consisted of artificial ground water. For sample preparation, ultrapure water was spiked with solutions of salts and standards in order to simulate the ionic composition of natural Austrian ground water. The following substances were added to the samples: CaCO3, CaCl2, Ca(NO3)2, MgSO4, Mg(NO3)2, NaCl, KCl, NaHCO3, KHCO3, Na2SiO3, C6H15PO3, potassium hydrogen phthalate (for DOC), sodium salicylate (for KMnO4-Index) and certified standard solutions of NaNO2, NH4Cl, KH2PO4 and H3BO3. Both samples, N131A and N131B, contained free CO2, which was used for dissolving the CaCO3. No other substances (e.g. preservatives) were added. The samples were stabilised by sterile filtration and low temperature. Ammonium and Boron were not added to sample N131A in order to check the analytical blank values. Homogeneity, accuracy and stability tests at the IFA-Tulln Six bottles per sample (N131A and N131B) were analysed for all investigated parameters prior to shipment to the participants. The results of the measurements are listed in the result tables and the parameter oriented part of the report (”IFA result”). After four weeks, total hardness, Ca2+, Mg2+, Na+, K+, DOC, NH4+, NO2-, o-PO43-, Cl-, SO42boron, total-P (as PO43-), silicon and KMnO4-Index were determined in four bottles for N131A and N131B. The results of the measurements are listed in the result tables and the parameter oriented part of the report (”Stability test”). According to our experience the samples remain stable up to 18 months when stored at 4°C in the dark except for the parameters NH4+, NO2-, o-PO43- and DOC. These parameters remain stable several weeks, whereas the first changes normally are observed for NH4+. Results Data evaluation was based on target concentrations that were calculated from the weights of the substances and standards used to produce the samples. Their uncertainty intervals correspond to the expanded uncertainty (coverage factor k = 2) as described in the EURACHEM/CITAC Guide “Quantifying Uncertainty in Analytical Measurement, 3rd Edition (2012)”. The target value of the electrical conductivity was set to the laboratory mean (conventional value). When calculated from more than 20 results, the laboratory mean has a smaller uncertainty than our estimate calculated from the target concentrations by Debye-Hückel´s theory: 2.4 % (p = 95 %). However, the calculated electrical conductivity was 475 µS/cm in sample N131A and 354 µS/cm in sample N131B. For the pH no target values can be assigned. The results can be compared on the tables. In this kind of samples containing CO2 the pH tends to increase slowly over time. Total phosphorus after digestion had to be determined according to DIN EN ISO 6878. Diethyl ethylphosphonate (C6H15PO3), which can be determined as phosphate only after oxidative digestion and potassium dihydrogen phosphate (KH2PO4) were used for preparation. The target values of total-P were calculated from the weights of the two substances. The results were given in mg/L o-PO43-. The concentration of sodium salicylate, which was used as standard substance for the KMnO4-Index, was 2.51 mg/L in sample N131A and 3.05 mg/L in sample N131B. Assuming complete oxidation to carbon dioxide, nitrate and water (considering nitrite and ammonium), the theoretical values were 3.53 mg/L O2 (N131A) and 4.51 mg/L O2 (N131B). However, the laboratory mean values were taken as reference values in this report: 3.40 mg/L O2 for N131A and 3.90 mg/L O2 for N131B. Samples N131B were produced in two charges and had different concentrations of 3orthophosphate, total-P (as PO4 ) and boron. In this report, the corresponding 3target values are assigned to the parameters orthophosphate, total-P (as PO4 ) and boron, relevant for the laboratory codes A to AH (N131B1 – N131B79) and as 3orthophosphate_1, total-P (as PO4 )_1 and boron_1 for the laboratory codes AI to BP (N131B80 – N131B158). Recoveries for individual laboratory results and overall mean values are related to the target concentrations. The results were tested for outliers by application of the Hampel outlier test (level of significance 99 %). In order to check the analytical blank values, target concentrations were set to <0.01 mg/L NH4+ and <0.02 mg/L Boron in N131A, which meets the minimum quantifiable values defined by the Austrian ground and river water monitoring program and the quantification limits of the analytical methods applied in the IFA. The recoveries of the target concentrations, calculated from outlier-corrected data mean values ranged between 97.1 % (silicon in sample N131A) and 111.4 % (total-P (as PO43-)_1 in sample N131B). The between laboratory CVs covered the range between 1.1 % (el. Conductivity in sample N131A) and 13.4 % (orthophosphate_1 in sample N131B). All confidence intervals of the outlier-corrected laboratory mean values encompass the corresponding target values with their uncertainties. Thus for all parameters, statistically, no difference could be detected between theoretical target concentrations and outlier corrected laboratory means. z-scores The most common approach is to form the z-score given by z= z xi x σ xi − x σ z-score result of laboratory target value or mean value („consensus value“) standard deviation Thus, the z-score is the ratio of the estimated bias (difference between result and target value) and a standard deviation. The z-score criteria were determined from relative standard deviations from all interlaboratory comparisons that were organised by the IFA-Tulln in the period from 2005 to 2015. They represent long-term performance data of all former participating laboratories. The z-scores are listed together with the recoveries in the tables of the parameter oriented part. Additionally, each laboratory obtained for every sample a single sheet that summarises the z-scores of the laboratory in graphical and tabular form. The following table lists the z-score criteria as relative standard deviation and their limits of applicability. Z-scores were only calculated, if the target values were higher than these limits. For Silicon (Total-Si as Si) z-Score-criteria is not available yet. Parameter z-Score-criteria (%) Lower limit Alkalinity KS4,3 2.5 0.2 mmol/L Ammonium 13 0.01 mg/L Boron 10 0.015 mg/L Calcium 3.5 9 mg/L Chloride 3.2 2 mg/L el. Conductivity 1.4 50 µS/cm DOC 6.2 1 mg/L Hydrogen carbonate 3.0 20 mg/L KMnO4-Index 11 1 mg/L Magnesium 3.6 1 mg/L Nitrate 3.5 2 mg/L Nitrite 5.7 0.005 mg/L Orthophosphate 11 0.015 mg/L Potassium 4.9 0.5 mg/L Silicon - - mg/L Sodium 3.6 1 mg/L Sulphate 3.2 3 mg/L 3.0 0.5 13 0.015 Total hardness Total-P (as 3PO4 ) Unit °d mg/L Normally, a classification based on z-scores is made this way: |z-Score| Classification <2 satisfactory 2<|z|<3 questionable >3 unsatisfactory Please note that this evaluation is made on the background of the average performance of all participants of the IFA-Test-Systems proficiency testing scheme during the period from 2005 to 2015. Illustration of results An explanation to the illustration of the results is given on the following page. The laboratory oriented part contains the measurement results and reported uncertainties of each individual laboratory for all parameters together with the achieved recoveries in graphical and tabular form. This part of the report also lists tables with the results originally reported by the laboratories. In the parameter oriented part the reported results and corresponding uncertainties are illustrated together with recoveries of the target values and the z-scores for each parameter and all laboratories. This information is presented in graphical and tabular form. Results, which were identified as outliers by the Hampel test are marked with an asterisk. These values were not considered for the calculation of statistical parameters (mean values. standard deviations and confidence intervals). Moreover, the parameter oriented part contains the uncertainties of the target value. The uncertainty intervals correspond to the expanded uncertainty (coverage factor k = 2) as described in the EURACHEM / CITAC rd Guide “Quantifying Uncertainty in Analytical Measurement, 3 Edition (2012)”. The uncertainty interval of the reference concentration is illustrated in the graphs as a grey band around the 100 % recovery line. Results, for which no recoveries could be calculated, are illustrated by one of the following symbols: FN (false negative), FP (false positive) or • - symbol. “FN”: A result is considered false negative when the “< result” reported is lower than the corresponding target value “FP”: False positive results can only be obtained for compounds that were evaluated on the basis of a “< target value”. A result is termed FP if it does not include (strike) the “< target” with its measurement uncertainty. “•”: All other results for which no recoveries can be calculated are illustrated by this symbol Tulln, 19 April 2016 Relative deviation from target value in percent Target value obtained from sample preperation Obtained from sample preperation, U=uncertainty Determined at IFA prior to shipment of samples Determined at IFA 3 weeks after sample dispatch Recovery of target value in percent z‐Score of the laboratory grey band illustrates uncertainty intervall of target value Result ± uncertainty as stated by participant Diagram 1: Measurement results and their uncertainties An asterik indicates a result detected as outlier by Hampel test Laboratory mean and recovery of target value with corresponding confidence intervals (p=99%) Number of results used for calculation of statistic parameters Result neither possible to calculate recovery nor false positive or false negative False negative: reported „<‐result“ is lower than target value Diagram 2: Recoveries and deviations from target values EXPLANATION Between laboratory standard deviation Interval expected to encompass target value as stated by participant Illustration of Results Tables and Parameter Oriented Part Round N131 Major Ions Sample Dispatch:14 March 2016 Results Sample N131A Cond. totalHardn. KS 4.3 HCO3 Ca Mg Unit µS/cm °d mmol/L mg/L mg/L Target value 479 9.47 1.79 106 481 9.66 1.74 103 pH IFA result 6.77 Stability test - 9.74 2+ 2+ + + - Na K NO3 mg/L mg/L mg/L mg/L 37.5 18.3 26.8 2.52 50.5 38.0 18.8 27.3 2.58 49.2 38.2 19.0 27.5 2.66 A 6.64 486 1.72 B 6.6 483 1.77 C 6.57 471 1.76 D 6.47 490 E 6.55 478 1.78 F 6.58 437 1.73 G 6.54 476 9.24 1.75 H 7.15 483 9.33 1.78 I 6.53 480 J 7.27 477 9.4 1.61 K 6.41 485 9.5 1.77 L 6.51 479 9.2 1.77 M 6.60 474 N 6.07 486 1.77 O 6.6 487 1.68 P 6.69 474 Q 6.52 480 R 6.9 479 9.4 1.78 109 36.6 18.5 26.4 2.42 49.2 S 6.49 484 9.11 1.78 108 35.1 18.3 27.1 2.38 48.2 T 8.01 481 9.83 1.85 109.81 39.38 18.77 26.57 2.54 46.88 U 6.54 498 V 6.7 476 9.2 1.76 104 36.1 18.2 26.0 2.36 49.13 W 6.67 487 9.36 1.81 108 37.6 18.3 26.6 2.47 48.1 X 6.7 484 9.3 1.8 107 37.6 17.5 26.3 2.51 45.2 Y 6.60 459 1.75 106.75 37.10 18.03 26.06 2.36 54.31 9.52 1.75 102 46.3 103.7 38.1 18.0 27.0 2.31 49.55 109 37 18 27 2.5 1.79 9.49 1.74 47.2 49 50.0 98 108 37.7 17.9 49.1 38.1 18.0 46.4 36.9 17.7 37.4 17.0 47 50.0 106.3 38.3 18.0 47 1.76 49.3 48.7 Z >35 AA 6.54 478 1.79 106 AB 6.6 478 AC 6.66 AD AE 9.31 1.77 105 37.1 17.9 26.4 2.48 50.9 479 9.60 1.77 105 37.5 18.8 26.8 2.39 48.6 6.3 477 9.6 1.75 104 39 18 27 2 49 6.73 477 9.5 1.77 105 37.7 18.2 26.9 2.42 49.8 475 9.31 1.79 106 37.1 17.9 26.7 2.63 48.9 AF 49.6 AG 6.48 481 9.37 1.79 106 37.5 17.8 25.6 2.71 49.5 AH 6.3 481 9.4 1.67 102.1 37.03 18.23 26.78 2.71 48.823 Uncertainties Sample N131A Cond. ± totalHardn. ± KS 4.3 ± HCO3 ± Ca ± Mg ± Unit µS/cm °d mmol/L mg/L mg/L Target value 1 0.07 0.01 1 10 0.58 0.07 4 pH ± IFA result 0.2 Stability test - 0.58 A 0.01 3 0.05 B 0.2 5 0.05 0.05 5 0.1 H 0.1 14 I 0.04 5 0.1 10 2+ 2+ + + - Na ± K ± NO3 ± mg/L mg/L mg/L mg/L 0.3 0.2 0.2 0.03 1 2.3 1.1 1.6 0.21 2 2.3 1.1 1.7 0.21 4 1 2 0.2 3 C D E F G 0.8 0.07 4 0.05 2 0.8 J K L 0.1 0.05 1 1 M N 0.018 0.502 O P 0.1 5 0.2 0.1 5 1 0.5 2 10 0.9 0.2 11 3.7 1.9 2.6 0.24 4.9 0.91 0.11 6.5 3.6 1.9 2.8 0.28 2.2 3.9 1.9 2.7 0.27 3.9 Q R S 0.06 10 T 0.1 4.51 U 0.33 25 V 0.1 10 0.9 0.18 11 3.6 1.8 2.6 0.24 4.9 W 0.02 4.0 0.03 0.023 1.2 0.10 0.06 0.12 0.03 0.30 X 0.20 14.5 1.4 0.18 10.70 5.6 2.6 3.9 0.4 6.8 0.37 0.23 0.04 0.06 0.07 0.19 4.9 Y Z AA AB 0.3 20 0.4 0.1 4 3 2.2 4 0.4 4 AC 0.27 19 1.73 0.07 4.2 6.8 3.4 4.8 0.43 4.4 AD 0.1 10 1.0 0.12 8.3 1.6 1.1 1.1 0.2 3.4 AE 0.30 14 1.1 0.08 5 3.4 1.7 2.2 0.20 4.5 2.88 0.159 0.005 0.32 0.58 0.59 0.27 0.060 0.57 0.94 0.09 5 3.8 1.8 2.6 0.27 5.0 0.183 15.32 1.481 1.094 1.607 0.271 1.9529 AF AG 0.13 7 AH 0.38 18.9 Results Sample N131A Cond. totalHardn. KS 4.3 HCO3 Ca Mg Unit µS/cm °d mmol/L mg/L mg/L Target value 479 9.47 1.79 106 481 9.66 1.74 103 pH IFA result 6.77 Stability test - 9.74 2+ + + - Na K NO3 mg/L mg/L mg/L mg/L 37.5 18.3 26.8 2.52 50.5 38.0 18.8 27.3 2.58 49.2 38.2 19.0 27.5 2.66 36.6 18.2 27.6 2.7 38.486 17.586 24.798 2.543 37.5 17.9 26.9 2.5 AI 6.83 483 9.3 1.81 AJ 6.5 479 9.46 1.81 AK 6.54 481 9.35 1.82 107 AL 6.62 483 AM 7.10 86 1.75 104 AN 6.76 482 9.67 1.95 116.1 38.36 18.64 26.83 2.56 49.35 AO 6.64 462 9.2 1.67 102 36.6 17.9 30 2.5 51.2 AP 6.54 478.4 9.5 1.84 112.3 36.9 18.0 27.1 2.77 50.2 AQ 6.65 39.3 17.7 27.0 2.5 47.6 AR 6.60 474 AS 5.75 393 AT 6.7 477 9.2 0.87 AU 7.010 490 9.664 1.7966 AV 6.73 481 9.56 1.77 AX 6.51 471 9.4 1.72 AY 6.58 471 9.5 1.78 AZ 6.6 457 9.4 1.775 105 BA 6.59 458 1.76 100 BB 6.59 483 9.09 1.77 BC 6.5 479 9.3 BD 6.81 430 BE 6.60 BF 9.4 1.8 107.4 2+ 49.7 49.3 48.2 109.8 44.1 36.3 18.07 26.8 3.02 65.97 53 35 19 109.6252 38.2966 18.7027 27.8707 7.3105 40.2026 37.80 18.18 26.55 2.47 42.30 36.7 18.4 26.1 2.60 49 38.0 18.2 26.8 2.5 50.5 36.1 19.0 26.6 2.8 49.6 105.0 34.93 18.22 26.46 2.65 50.65 1.75 107 37 18 26 2.6 50 9.60 1.83 112 36.9 17.9 26.0 2.33 49.0 478 9.4 1.86 113.49 37.58 18.21 26.38 2.71 40.33 6.4 481 9.2 1.76 104 37.7 17.5 26.7 2.52 49.6 BG 6.46 490 BH 6.7 479 9.47 1.78 106 37.9 18.4 26.2 2.53 52.9 BI 6.62 477 9.6 1.88 114.7 38.81 18.18 27.12 2.57 50.25 BJ 6.70 475 1.78 109 52.8 AW 102 49.8 BK 48.4 1.793 BL 475.5 9.41 1.80 106.4 36.6 18.7 51.4 BM 7.09 474 9.07 1.65 100 36.8 17.0 24.9 2.68 49.2 BN 6.3 480 9.57 1.72 102 38.5 18.2 27.1 2.51 52.9 41.08 15.68 BO BP 0.18 6.85 479 1.77 104.9 46.47 Uncertainties Sample N131A Cond. ± totalHardn. ± KS 4.3 ± HCO3 ± Ca ± Mg ± Unit µS/cm °d mmol/L mg/L mg/L Target value 1 0.07 0.01 1 10 0.58 0.07 4 pH ± IFA result 0.2 Stability test - 0.58 AI 10 0.5 0.09 5.4 AJ 2+ 2+ + + - Na ± K ± NO3 ± mg/L mg/L mg/L mg/L 0.3 0.2 0.2 0.03 1 2.3 1.1 1.6 0.21 2 2.3 1.1 1.7 0.21 1.8 0.9 1.4 0.1 2.287 2.431 2.793 0.270 1.5 AK AL AM 0.15 0.09 AN 0.02 11 0.02 0.08 5.2 0.34 0.10 1.00 0.10 0.62 AO 0.03 3 0.1 0.06 4 0.1 0.1 0.2 0.02 0.4 AP 2.1 1.4 1.5 0.15 AQ 4.7 2.1 2.7 0.3 AR 0.056 8.4 AS 0.02 10 1.3 0.079 1.1 4.9 9.0 8.8 0.1 0.15 0.1 0.05 0.15 0.0052 0.0455 0.0450 0.0078 0.0250 0.357 0.916 0.204 0.053 0.451 1.9 1.0 1.4 0.18 2 AT AU AV 1.1129 0.0064 0.03 3 0.03 AX 0.09 5 0.5 0.04 AY 0.02 30 0.2 0.02 0.6 0.6 0.2 0.06 0.5 0.120 2.0 2.0 2.0 0.3 3.0 3.48 1.45 2.37 0.24 4.54 AW AZ 10.0 3 BA 0.12 8.7 BB 0.2 10 BC 0.1 3 1 0.10 3 1 1 2 0.5 2 BD 0.05 2 0.6 0.1 6.1 1.7 0.8 0.8 0.3 0.4 12 0.9 0.2 10 4 2 3 0.3 5 BE BF BG 0.05 2.0 3.03 BH 0.3 0.3 0.2 0.08 0.8 BI BJ 0.13 29 0.036 BK BL 2.2 3.9 0.01 9.5 0.19 0.04 2.2 0.7 0.4 28.8 0.718 0.163 9.7 2.31 2.19 1.39 0.43 3.1 BM BN BO BP 0.075 14 0.05 1.76 0.251 5.55 0.40 Results Sample N131A - NH4 Cl SO4 2- o-PO4 Boron DOC Unit mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L Target value 0.040 <0.01 42.1 39.4 0.090 <0.02 4.06 0.148 3.40 2.28 IFA result 0.040 <0.01 41.8 39.8 0.090 <0.02 4.09 0.159 3.57 2.18 Stability test 0.040 <0.01 43.0 39.7 0.090 <0.02 3.98 0.168 3.51 2.24 A 0.039 <0.02 41.9 B 0.041 <0.025 C 0.0401 <0.03 43.4 0.0954 D 0.045 <0.020 42.5 0.087 E 0.0403 <0.03 0.0907 F 0.041 <0.01 0.087 G 0.0401 <0.026 42.08 39.33 0.0837 H 0.042 <0.030 42 39 0.089 I 0.039 <0.03 42.4 0.096 0.142 J 0.043 0.002 43.8 0.108 0.153 2.17 K 0.038 <0.01 42 0.092 0.146 2.28 L 0.042 <0.02 41.2 0.090 0.147 M 0.041 <0.03 0.092 0.138 N 0.041 <0.03 0.098 0.168 O 0.039 <0.02 0.090 0.153 P 0.041 <0.02 41.9 0.091 0.148 Q 0.040 0.010 41.1 38.3 R 0.040 <0.010 41.1 38.8 S 0.041 <0.025 41.9 38.5 0.094 T 0.040 <0.009 39.71 37.15 0.098 3.91 0.156 U 0.048 <0.012 41.0 39.3 0.089 4.52 0.135 V 0.039 <0.010 40.92 38.8 0.089 4.006 0.141 W 0.040 <0.010 42.0 38.7 0.088 <0.010 4.19 0.139 X 0.04 0.009 38.9 36.60 0.095 <0.02 4.40 0.137 Y 0.04 0.01 41.15 41.47 0.07 4.51 0.13 Z + - <0.01 3- total-P KMnO43as PO4 Index NO2 0.088 0.150 0.089 0.147 4.42 <0.05 4.22 <0.002 0.076 4.0 3.99 Silicon 2.22 0.141 3.30 2.26 0.139 3.48 2.18 0.146 2.17 0.1396 2.15 0.15 2.2 3.5 3.48 2.26 2.24 2.1 3.4 0.144 2.23 2.15 3.25 3.20 0.082 0.109 0.086 0.143 AA 0.041 <0.005 41.5 AB 0.041 <0.013 42.6 39.3 0.085 AC 0.039 <0.01 41.0 38.3 0.095 AD 0.041 <0.02 41 37 0.089 AE 0.039 <0.008 42.0 38.8 0.091 AF 0.0394 <0.0064 41.9 39.3 AG 0.0411 <0.010 41.1 AH 0.041 0.005 39.93 3.17 2.19 4.16 0.146 4.28 0.158 3.31 4.26 0.147 3.9 <0.004 4.13 0.150 0.0864 [0.002] 4.22 0.1480 38.9 0.089 <0.020 4.03 0.146 3.48 37.03 0.84 [0.00114] 4.3 0.15 3.5 <0.01 2.25 2.21 2.26 2.2 Uncertainties Sample N131A - + NH4 ± Cl ± SO4 ± 2- o-PO4 ± Boron ± DOC ± Unit mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L Target value 0.001 0.5 0.5 0.001 0.05 0.002 0.09 0.05 IFA result 0.002 1.7 1.6 0.013 0.41 0.022 0.36 0.17 Stability test 0.002 1.7 1.6 0.013 0.40 0.024 0.35 0.18 A 0.003 0.01 B 0.01 - 2 3- total-P KMnO43as PO4 Index ± ± NO2 ± Silicon ± 0.003 0.003 0.05 0.01 0.01 0.01 0.005 0.005 0.005 H 0.003 0.004 1 I 0.002 0.01 3 0.003 0.005 0.1 0.05 1 0.005 0.005 0.2 0.1 0.002 0.003 0.01 0.01 0.1 0.2 C D E F G 2 0.009 0.001 0.2 0.01 0.1 J K L 0.005 M N 0.0004 O P 0.05 0.02 2 Q R 0.010 4.1 3.9 S 0.002 2.2 1.7 0.005 T 0.004 4.0 3.7 0.009 0.39 0.015 U 0.013 4.1 3.9 0.015 0.45 0.016 V 0.010 4.1 3.9 0.009 0.40 0.014 W 0.0006 0.16 0.04 0.0002 0.16 0.003 X 0.006 0.001 5.8 5.5 0.014 0.66 0.021 Y 0.00 0.00 0.03 0.04 0.01 0.04 0.00 0.007 0.5 0.32 Z 0.05 0.006 0.004 AA AB 0.004 4 3 0.012 0.7 0.02 AC 0.004 3.7 3.4 0.009 0.39 0.006 0.3 AD 0.004 3.3 2.2 0.013 0.68 0.019 0.4 AE 0.005 2.1 2.0 0.009 0.37 0.015 AF 0.0009 0.15 0.33 0.0020 0.01 0.0019 AG 0.0062 4.1 3.9 0.013 0.40 0.029 0.35 AH 0.003 2.396 1.481 0.0101 0.34 0.0223 0.5000 <0.006 0.0005 0.2 0.09 0.3 Results Sample N131A - + NH4 Cl SO4 2- o-PO4 Boron DOC Unit mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L Target value 0.040 <0.01 42.1 39.4 0.090 <0.02 4.06 0.148 3.40 2.28 IFA result 0.040 <0.01 41.8 39.8 0.090 <0.02 4.09 0.159 3.57 2.18 Stability test 0.040 <0.01 43.0 39.7 0.090 <0.02 3.98 0.168 3.51 2.24 AI 0.039 <0.03 42.1 39.7 0.089 <0.050 4.07 0.175 3.25 2.36 4.1 0.144 3.64 2.6 - 3- total-P KMnO43as PO4 Index NO2 AJ Silicon <0.005 AK 0.039 <0.01 AL 0.04 <0.05 AM 0.05 <0.01 57.3 AN 0.043 <0.01 39.40 38.72 AO <0.01 0.012 44.3 41.1 AP 0.04 <0.013 42 39.5 0.03 40.5 38.0 <0.1 41.2 38.3 <0.6 39.49 40.65 0.076 0.146 45 40 0.09 0.17 3.1 0.1656 3.120 AQ 41.8 39.0 0.81 AR 0.043 AS 0.04 AT 0.038 0.01 AU 0.4745 0.0125 AV 0.043 0.1889 AW 0.04 <0.05 AX 0.04 <0.04 40 39 AY 0.035 <0.03 42.6 39.8 AZ 0.050 <0.050 41.6 39.0 35.9927 34.1436 36.45 0.098 0.83 0.086 3.91 0.139 4.75 <0.2 <0.1 0.23 2.11 0.05 0 4.1 0 5.5243 <0.15 35.61 3.2 1.89 2.2752 3.7 0.10 0.08 0.0565 4.25 0.146 3.331 2.2 3.39 2.15 4.48 <0.010 4.13 BA 3.92 BB 0.0394 <0.02 42.21 40.57 0.087 <0.010 3.89 BC 0.04 <0.02 41 40 <0.05 4.1 0.16 BD 0.043 <0.005 40.7 37 4.2 0.151 BE 0.042 <0.05 42.29 32.72 BF 0.041 <0.01 43.1 38.9 4.2 0.17 BG 0.073 0.024 BH 0.043 0.011 42.9 40.1 0.086 BI 0.05 <0.02 43.55 42.46 <0.02 5.58 BJ 0.0419 <0.013 42.9 38.4 0.0919 4.61 0.153 BL 0.039 <0.02 42.8 40.2 0.090 4.13 0.146 BM 0.044 0.016 41.5 39.4 0.113 <0.01 9.71 0.121 BN 0.040 <0.04 44.1 40.6 <0.020 4.13 0.110 42.53 39.07 0.092 3.60 2.31 3.3 2.2 <0.01 0.087 <0.005 0.095 3.44 2.24 0.161 [0.002] 0.122 3.09 2.59 BK BO BP 0.040 <0.020 2.51 2.72 Uncertainties Sample N131A - + NH4 ± Cl ± SO4 ± 2- o-PO4 ± Boron ± DOC ± Unit mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L Target value 0.001 0.5 0.5 0.001 0.05 0.002 0.09 0.05 IFA result 0.002 1.7 1.6 0.013 0.41 0.022 0.36 0.17 Stability test 0.002 1.7 1.6 0.013 0.40 0.024 0.35 0.18 AI 0.004 1.3 1.2 0.009 0.41 0.018 0.33 0.24 0.12 0.006 - 3- total-P KMnO43as PO4 Index ± ± NO2 ± Silicon ± AJ AK AL AM AN 0.03 0.003 AO 0.005 0.2 0.05 0.46 0.44 0.3 0.4 0.002 0.42 AP 0.12 AQ 0.004 5.7 5.3 0.02 AR 0.0077 8.1 7.7 1.2 0.55 AS 0.08 0.2 0.8 0.002 0 0 0.0918 0.1839 0.6410 0.2490 0.003 0.0017 0.1 0.005 0.17 0.03 0.002 0.05 AT AU 0.6170 0.0461 0.0392 0.0213 AV 0.025 0.004 4.38 0.842 2 2 0.25 3.0 0.03 2.0 2.0 0.50 AW AX 0.002 AY 0.015 AZ 0.012 0.08 BA 0.37 BB 0.0027 5.04 4.04 BC 0.01 2 3 BD 0.002 0.2 2 4 4 0.003 0.013 0.27 0.54 0.5 0.02 0.002 0.2 0.005 0.009 0.4 0.02 0.3 0.06 BE BF 0.004 BG 0.031 0.002 BH 0.003 0.003 0.4 0.0042 0.0019 0.010 0.014 1.1 0.002 0.002 1.3 5.8 0.0046 0.92 0.038 0.002 2.6 2.4 0.006 0.17 0.010 0.0040 3.97 3.65 0.248 0.0110 0.60 0.70 0.3 0.2 0.81 BI BJ BK BL BM BN BO BP 0.003 0.65 Results Sample N131B Cond. totalHardn. KS 4.3 HCO3 Ca Mg Unit µS/cm °d mmol/L mg/L mg/L Target value 356 5.40 2.96 177 359 5.44 2.89 173 pH IFA result 6.68 Stability test - 5.54 2+ 2+ + + - Na K NO3 mg/L mg/L mg/L mg/L 27.5 6.73 36.8 7.55 4.87 27.7 6.76 37.4 7.65 4.62 28.1 6.91 37.7 7.87 A 6.61 361 2.83 B 6.5 359 2.88 C 6.63 348 2.91 D 6.45 360 E 6.50 355 2.97 F 6.53 323 2.85 G 6.45 356 5.60 2.90 H 6.99 360 5.46 2.92 I 6.50 359 J 7.25 355 5.5 2.77 K 6.28 355 5.4 2.90 L 6.44 356 5.3 2.92 M 6.52 352 2.85 4.4 N 5.95 359 2.92 4.85 O 6.5 358 2.68 P 6.54 358 Q 6.43 356 R 6.8 357 5.3 2.90 177 26.7 6.76 36.1 7.20 4.7 S 6.45 363 5.13 2.93 179 26.0 6.53 37.9 7.43 4.73 T 8.35 360 5.81 3.00 179.97 29.81 7.11 36.32 7.82 4.94 U 6.58 363 V 6.6 350 5.2 2.91 178 26.5 6.69 35.6 7.12 4.72 W 6.82 353 5.37 2.99 197 27.6 6.77 36.3 7.29 3.90 X 6.6 362 5.4 2.88 173 28.3 6.3 34.4 8.15 4.2 Y 6.58 344 2.92 178.12 32.94 6.19 35.44 35.44 4.47 5.43 2.89 170 4.20 173.3 27.8 6.62 36.3 7.70 4.76 178 28 6.7 36 7.5 2.95 5.43 2.89 4.56 4.7 4.7 169 178 176.5 27.5 7.2 3.8 27.7 6.8 4.82 26.9 6.8 28.0 6.6 4.5 2.94 4.75 4.75 Z 3.81 AA 6.50 356 2.96 177 AB 6.5 356 AC 6.77 AD AE 5.31 2.79 167 27.2 6.57 36.1 7.55 4.79 356 5.42 2.93 176 27.3 6.91 36.7 7.22 4.87 6.5 356 5.5 2.92 175 28 7 37 7 5 6.65 354 5.5 2.93 176 28.4 6.72 37.0 7.50 4.65 352 5.37 2.93 175 27.4 6.66 36.2 7.63 4.72 AF 4.70 AG 6.45 359 5.34 2.96 178 27.3 6.58 34.7 7.76 4.93 AH 6.2 352 5.3 2.78 169.3 27.1 6.58 38.2 7.51 4.626 Uncertainties Sample N131B Cond. ± totalHardn. ± KS 4.3 ± HCO3 ± Ca ± Mg ± Unit µS/cm °d mmol/L mg/L mg/L Target value 1 0.05 0.02 1 7 0.33 0.12 7 pH ± IFA result 0.2 Stability test - 0.33 A 0.01 3 0.05 B 0.2 5 0.05 0.05 5 0.1 H 0.1 11 I 0.04 5 0.1 10 2+ 2+ + + - Na ± K ± NO3 ± mg/L mg/L mg/L mg/L 0.3 0.08 0.3 0.04 0.11 1.7 0.41 2.2 0.61 0.18 1.7 0.41 2.3 0.63 3 0.4 2 0.5 3 C D E F G 0.5 0.12 7 0.05 0.1 0.1 J K L 0.1 0.05 1 0.5 M N 0.029 0.049 O P 0.1 5 0.2 0.1 5 1 0.5 2 10 0.5 0.3 18 2.7 0.68 3.6 0.72 0.5 0.51 0.18 10.7 2.7 0.67 3.9 0.88 0.21 3.0 0.7 3.6 0.81 0.4 Q R S 0.06 7 T 0.1 4.51 U 0.33 18 V 0.1 10 0.5 0.29 18 2.7 0.70 3.6 0.72 0.5 W 0.02 2.6 0.006 0.006 0.58 0.06 0.01 0.30 0.04 0.06 X 0.20 10.9 0.8 0.29 17.30 4.2 0.9 5.2 1.2 0.6 5.02 0.05 0.22 0.22 0.07 0.30 0.48 Y Z 0.15 AA AB 0.3 15 0.3 0.1 6 3 0.8 6 1.2 0.3 AC 0.27 14 0.98 0.12 7.0 4.9 1.2 6.6 1.30 0.44 AD 0.1 7 0.6 0.2 14 1.1 0.4 1.5 0.6 0.2 AE 0.30 11 0.7 0.12 7 2.6 0.65 3.0 0.52 0.42 0.36 0.089 0.005 0.32 0.60 0.138 0.27 0.257 0.09 0.54 0.15 9 2.7 0.66 3.5 0.78 0.49 0.416 25.4 1.084 0.395 2.292 0.751 0.185 AF AG 0.13 7 AH 0.37 14.1 Results Sample N131B Cond. totalHardn. KS 4.3 HCO3 Ca Mg Unit µS/cm °d mmol/L mg/L mg/L Target value 356 5.40 2.96 177 359 5.44 2.89 173 pH IFA result 6.68 Stability test - 5.54 2+ + + - Na K NO3 mg/L mg/L mg/L mg/L 27.5 6.73 36.8 7.55 4.87 27.7 6.76 37.4 7.65 4.62 28.1 6.91 37.7 7.87 26.4 6.60 37.3 7.9 28.285 6.630 34.591 7.440 27.3 7.1 36.9 7.6 AI 6.82 364 5.2 2.97 AJ 6.5 358 5.43 2.94 AK 6.51 357 5.43 2.96 179 AL 6.57 356 AM 6.96 149 2.98 179 AN 6.78 359 5.56 3.11 186.7 28.28 6.94 36.56 7.45 4.71 AO 6.62 346 5.1 2.79 170 26.1 6.5 41 7.6 4.9 AP 6.43 356.0 5.05 2.98 181.5 26.7 7.15 37.4 7.74 5.05 AQ 6.59 28.6 6.7 37.6 7.5 4.6 AR 6.53 354 AS 5.78 293 AT 7.1 355 5.3 1.43 AU 6.935 362 7.598 2.9033 AV 6.67 353 5.46 2.92 AX 6.44 353 5.4 2.88 AY 6.58 350 5.4 2.93 AZ 6.6 339 5.3 2.927 176 BA 6.57 342 2.90 170 BB 6.55 360 5.12 2.92 BC 6.5 356 5.3 BD 6.78 321 BE 6.60 BF 5.42 3 178.3 2+ 4.6 4.8 6.08 183.1 3.45 27.86 6.64 38.07 7.36 5.09 87 25 7.1 177.1496 28.0852 6.9757 38.205 2.3947 6.2260 27.75 6.70 36.36 7.46 4.39 28.2 6.5 36.3 7.9 4.8 27.6 6.6 36.6 7.6 4.8 26.9 6.5 36.5 7.2 4.5 175.5 25.42 6.76 35.26 7.58 4.90 2.90 177 27 6.6 36 7.5 4.8 5.53 2.91 177 27.0 6.7 35.5 6.95 4.8 355 5.2 2.96 180.61 28.18 6.83 37.30 8.53 4.4 6.3 355 5.6 2.88 173 28.7 6.76 36.8 7.81 4.6 BG 6.34 367 BH 6.6 348 5.48 2.93 176 28.3 6.84 34.7 7.40 4.66 BI 6.61 359 5.5 2.92 178.2 28.50 6.52 37.37 7.68 4.95 BJ 6.66 353 2.94 179 5.3 AW 173 5.21 BK 4.71 2.946 BL 357.8 5.38 2.96 177.5 27.3 6.8 4.93 BM 7.10 351 5.02 2.63 160 26.1 5.96 32.3 6.49 4.34 BN 6.5 350 5.55 2.86 172 28.5 6.83 36.8 7.61 4.88 25.05 9.12 BO BP 0.30 6.80 357 2.93 175.7 4.85 Uncertainties Sample N131B Cond. ± totalHardn. ± KS 4.3 ± HCO3 ± Ca ± Mg ± Unit µS/cm °d mmol/L mg/L mg/L Target value 1 0.05 0.02 1 7 0.33 0.12 7 pH ± IFA result 0.2 Stability test - 0.33 AI 7 0.3 0.15 8.9 AJ 2+ 2+ + + - Na ± K ± NO3 ± mg/L mg/L mg/L mg/L 0.3 0.08 0.3 0.04 0.11 1.7 0.41 2.2 0.61 0.18 1.7 0.41 2.3 0.63 1.3 0.33 1.9 0.4 2.344 0.230 2.727 0.270 0.1 AK AL AM AN 0.20 4 0.02 0.08 2.6 0.10 0.12 1.38 0.34 0.18 AO 0.03 2 0.1 0.11 7 0.1 0.1 0.2 0.06 0.1 AP 1.5 0.23 0.93 0.24 AQ 3.4 0.8 3.8 0.9 AR 0.056 6.3 AS 0.02 10 0.73 0.098 6.0 0.9 0.89 0.1 0.15 0.1 0.05 0.15 0.0067 0.0832 0.0472 0.0608 0.0119 0.357 0.916 0.109 0.053 0.340 1.5 0.4 1.9 0.4 0.3 AT AU AV 0.0159 0.0159 0.02 5 0.01 AX 0.09 5 0.3 0.04 AY 0.02 30 0.2 0.02 0.6 0.6 0.2 0.06 0.5 0.200 2.0 1.0 2.0 0.7 0.5 2.55 0.55 3.19 0.69 0.43 AW AZ 10.0 3 BA 0.12 6.5 BB 0.2 7 BC 0.1 3 0.5 0.10 4 1 1 2 1 0.8 BD 0.05 2 0.6 0.1 6.1 1.7 0.8 0.8 0.3 0.4 9 0.6 0.3 15 3 0.7 4 0.8 0.5 BE BF BG 0.05 2.0 0.317 BH 0.3 0.25 0.2 0.08 0.17 BI BJ 0.13 21 0.059 BK BL 3.6 0.38 0.02 7.2 0.11 0.06 3.6 0.5 0.2 21.0 0.416 0.272 16.3 1.71 0.819 1.39 0.43 0.30 BM BN BO BP 0.075 11 0.09 2.39 0.761 0.513 0.40 Results Sample N131B - NH4 Cl SO4 2- o-PO4 Boron DOC Unit mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L Target value 0.083 0.050 8.02 22.8 0.071 0.071 2.63 0.076 3.90 4.56 IFA result 0.083 0.051 7.77 23.1 0.072 0.073 2.62 0.079 4.10 4.39 Stability test 0.083 0.051 8.24 22.9 0.073 0.071 2.58 0.084 4.01 4.47 A 0.083 0.05 7.8 B 0.083 0.054 C 0.0811 0.043 9.1 0.0745 D 0.088 0.051 7.8 0.073 E 0.0836 0.049 0.0720 F 0.086 0.054 0.072 G 0.0803 0.062 8.58 23.01 0.0690 H 0.089 0.062 8.0 22 0.070 I 0.082 0.06 7.9 0.080 0.075 J 0.085 0.054 9.6 0.082 0.088 4.38 K 0.078 0.055 8.0 0.073 0.074 4.58 L 0.086 0.048 8.2 0.071 0.079 M 0.082 0.05 8 0.070 0.071 N 0.085 0.044 0.076 0.100 O 0.082 0.060 0.070 0.079 P 0.084 0.05 7.9 0.070 0.077 Q 0.082 0.056 8.33 21.5 R 0.084 0.048 7.8 22.1 S 0.084 <0.025 7.78 22.2 0.076 T 0.083 0.055 7.63 21.99 0.080 2.58 0.083 U 0.092 0.059 7.9 22.6 0.072 3.03 0.073 V 0.082 0.049 7.83 22.1 0.074 2.719 0.080 W 0.083 0.048 7.66 22.0 0.0687 0.072 2.68 0.072 X 0.086 0.055 7.70 21.8 0.077 0.063 2.50 0.077 Y 0.08 0.04 8.69 24.57 0.06 3.12 0.07 Z + - 0.054 3- total-P KMnO43as PO4 Index NO2 0.072 0.074 0.070 0.081 3.05 0.097 2.84 0.072 0.061 2.7 2.31 Silicon 4.47 0.0819 4.23 4.46 0.076 3.96 4.37 0.0754 4.39 0.0758 4.25 0.077 4.4 4.0 4.00 4.67 4.60 4.2 3.9 0.087 4.51 4.29 3.76 3.86 3.80 4.53 4.44 0.066 AA 0.084 0.047 7.63 0.070 AB 0.085 0.052 8.50 23.0 0.069 AC 0.079 0.058 7.62 22.1 0.076 AD 0.084 0.041 8 20 0.067 AE 0.085 0.052 8.47 22.1 0.071 AF 0.0830 0.0508 7.93 22.8 AG 0.0865 0.050 8.05 AH 0.083 0.047 7.74 0.077 2.74 0.076 2.84 0.088 3.88 2.76 0.067 4.1 0.074 2.70 0.077 0.0760 0.068 2.85 0.0790 22.3 0.070 0.069 2.57 0.071 4.16 24.82 0.075 0.084 2.9 0.086 3.9 0.072 4.37 4.51 4.3 Uncertainties Sample N131B - + NH4 ± Cl ± SO4 ± 2- o-PO4 ± Boron ± DOC ± Unit mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L Target value 0.001 0.001 0.02 0.3 0.001 0.001 0.04 0.001 0.08 0.11 IFA result 0.005 0.004 0.31 0.9 0.010 0.007 0.26 0.011 0.41 0.35 Stability test 0.005 0.004 0.66 0.9 0.010 0.007 0.26 0.012 0.40 0.36 A 0.003 0.01 2 B 0.01 - 3- total-P KMnO43as PO4 Index ± ± NO2 ± Silicon ± 0.003 0.003 0.05 0.01 0.01 0.01 0.005 0.005 0.005 H 0.005 0.008 0.2 I 0.003 0.01 1 0.003 0.003 0.1 0.08 0.005 0.005 0.5 0.005 0.005 0.2 0.1 0.0009 0.0028 0.001 0.002 0.05 0.02 2 0.01 0.01 0.1 0.2 R 0.010 0.010 0.8 2.2 S 0.004 0.007 0.41 0.95 0.004 T 0.008 0.005 0.8 2.2 0.008 0.26 0.008 U 0.026 0.014 0.8 2.3 0.012 0.30 0.009 V 0.010 0.010 0.8 2.2 0.007 0.27 0.008 W 0.0005 0.0006 0.05 0.05 0.0005 0.001 0.07 0.001 X 0.013 0.008 1.2 3.3 0.012 0.009 0.38 0.012 Y 0.00 0.01 0.10 0.13 0.01 0.02 0.00 0.5 0.009 0.26 0.004 0.35 0.44 0.009 0.41 C D E F G 1 0.007 0.01 0.2 0.005 0.1 J K L M N O P Q Z 0 0.5 0.38 0.18 0.03 0.024 AA AB 0.007 0.005 0.7 2 0.01 AC 0.007 0.005 0.69 2 0.007 AD 0.08 0.013 0.6 1.2 0.010 AE 0.009 0.008 0.51 1.2 0.007 0.008 0.25 0.008 AF 0.0009 0.0015 0.03 0.34 0.0020 0.002 0.01 0.0019 AG 0.0130 0.008 0.81 2.2 0.011 0.010 0.26 0.014 0.42 AH 0.0067 0.0047 0.31 1.489 0.009 0.0101 0.23 0.0130 0.0600 0.01 0.4 0.18 0.5 Results Sample N131B 3- total-P 3- KMnO4as PO4 Index _1 NO2 NH4 Cl SO4 o-PO4 _1 Boron _1 DOC Unit mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L Target value 0.083 0.050 8.02 22.8 0.082 0.058 2.63 0.087 3.90 4.56 IFA result 0.083 0.051 7.77 23.1 0.085 0.059 2.62 0.092 4.10 4.39 Stability test 0.083 0.051 8.24 22.9 0.085 0.057 2.58 0.097 4.01 4.47 AI 0.088 0.056 8.1 22.9 0.087 0.059 2.86 0.108 3.91 4.64 2.7 0.095 3.85 6.4 - + - 2- AJ Silicon 0.060 AK 0.079 0.044 AL 0.09 <0.05 AM 0.10 0.05 12.2 AN 0.086 0.051 7.72 22.44 AO 0.089 0.059 7.9 23.9 AP 0.08 0.065 7.35 19 0.10 7.8 22.5 <0.1 6.6 21.5 <0.6 8.19 23.77 0.071 0.091 <5 23 0.06 0.12 3.6 0.0867 4.140 AQ 8.0 22.5 0.60 AR 0.086 AS 0.08 AT 0.080 0.056 AU 0.4812 0.080 AV 0.055 0.038 AW 0.09 0.07 AX 0.084 0.0524 8.1 22.0 AY 0.068 0.057 8.1 23.0 AZ 0.092 0.060 7.1 22.4 10.7991 23.1698 6.59 0.101 0.62 0.081 2.61 0.088 3.25 <0.2 58.7 <0.2 4.22 0.05 0 2.8 0.0575 4.701 <0.15 19.87 3.6 4.02 4.7503 3.9 0.10 0.078 <0.001 2.85 0.0898 3.766 4.5 3.85 4.23 2.73 0.057 2.65 BA 4.49 BB 0.0790 0.047 7.96 23.68 0.084 0.054 2.51 BC 0.08 0.06 8.1 24 0.07 2.7 0.10 BD 0.088 0.047 7.7 33 2.8 0.095 BE 0.11 <0.05 8.15 17.93 BF 0.085 0.058 7.3 22.1 2.74 0.11 BG 0.117 0.064 BH 0.090 0.056 8.15 22.5 0.082 BI 0.10 0.06 8.8 26.58 0.09 3.28 BJ 0.0854 0.0537 8.50 22.4 0.0889 3.08 <0.15 BL 0.081 0.053 8.31 23.3 0.094 2.75 0.097 BM 0.088 0.027 7.80 21.9 0.108 0.053 5.62 0.110 BN 0.084 0.062 8.28 23.1 0.061 2.65 0.076 7.63 23.21 0.086 3.52 4.80 3.9 4.2 0.061 0.085 0.059 0.091 4.2 4.53 0.104 0.060 0.083 3.81 5.14 BK BO BP 0,082 0,050 3.18 11.4 Uncertainties Sample N131B 3- total-P KMnO43as PO4 Index ± _1 ± NO2 ± NH4 ± Cl ± SO4 ± o-PO4 _1 ± Boron _1 ± DOC ± Unit mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L Target value 0.001 0.001 0.02 0.3 0.002 0.001 0.04 0.002 0.08 0.11 IFA result 0.005 0.004 0.31 0.9 0.012 0.006 0.26 0.013 0.41 0.35 Stability test 0.005 0.004 0.66 0.9 0.012 0.006 0.26 0.014 0.40 0.36 AI 0.009 0.006 0.2 0.7 0.009 0.006 0.29 0.011 0.39 0.46 0.14 0.012 - + - 2- AJ Silicon ± 0.002 AK AL AM AN 0.003 0.004 0.18 0.26 AO 0.007 0.01 0.1 0.2 0.003 0.29 AP 5.1 AQ 0.01 1.1 3.1 0.21 0.02 AR 0.010 1.3 4.3 0.9 AS 0.08 0.2 0.8 0.002 0 0.61 0.002 0.05 AT AU 0.3958 0 0.0932 0.0141 AV 0.019 0.009 0.019 0.842 AX 0.004 0.003 0.5 1.2 AY 0.015 0.08 0.25 3.0 AZ 0.023 0.020 0.7 2.0 0.0695 0.2198 0.0475 0.1232 0.2686 0.07 0.005 0.17 0.03 AW 0.003 0.03 0.002 0.50 BA 0.43 BB 0.0056 0.007 0.95 2.33 0.012 0.011 0.18 0.54 BC 0.01 0.01 1 2 0.01 0.3 0.02 BD 0.002 0.003 0.2 2 0.002 0.2 0.005 BF 0.008 0.006 0.7 2 0.009 0.3 0.01 BG 0.049 0.005 BH 0.003 0.003 0.27 1.1 0.001 0.0085 0.0081 0.26 3.4 0.0044 0.62 0.038 0.004 0.003 0.50 1.4 0.007 0.11 0.007 0.0084 0.0062 0.746 2.08 0.159 0.0076 0.60 0.70 0.3 0.06 BE 0.006 0.010 0.4 0.4 0.009 0.002 0.002 0.82 BI BJ BK BL BM BN BO BP 0.005 0.008 0.0085 1.3 Sample N131A Parameter Conductivity Target value ± U (k=2) IFA result ± U (k=2) Stability test 479 µS/cm ± 1 µS/cm 481 µS/cm ± 10 µS/cm µS/cm Lab Code Result ± Unit Recovery z-Score A 486 3 µS/cm 101% 1,04 5 B 483 µS/cm 101% 0,60 C 471 µS/cm 98% -1,19 D 490 µS/cm 102% 1,64 E 478 µS/cm 100% -0,15 F 437 µS/cm 91% -6,26 G 476 µS/cm 99% -0,45 H 483 14 µS/cm 101% 0,60 I 480 5 µS/cm 100% 0,15 J 477 µS/cm 100% -0,30 K 485 µS/cm 101% 0,89 L 479 µS/cm 100% 0,00 M 474 µS/cm 99% -0,75 1,04 * 5 10 N 486 µS/cm 101% O 487 µS/cm 102% 1,19 P 474 µS/cm 99% -0,75 Q 480 µS/cm 100% 0,15 R 479 10 µS/cm 100% 0,00 S 484 10 µS/cm 101% 0,75 4,51 µS/cm 100% 0,30 25 µS/cm 104% 2,83 T 481 U 498 5 * V 476 10 µS/cm 99% -0,45 W 487 4,0 µS/cm 102% 1,19 X 484 14,5 µS/cm 101% 0,75 Y 459 µS/cm 96% -2,98 * Z 5% 24,0 Result [µS/cm] 10% 47,9 15% 71,9 551 15% 527 10% 503 5% 479 Target value ± U (k=2) 455 - 5% 431 - 10% 407 - 15% A C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Recovery [%] Deviation 140 Recovery 130 120 µS/cm AA 478 µS/cm 100% -0,15 AB 478 20 µS/cm 100% -0,15 AC 479 19 µS/cm 100% 0,00 AD 477 10 µS/cm 100% -0,30 AE 477 14 µS/cm 100% -0,30 AF 475 2,88 µS/cm 99% -0,60 AG 481 7 µS/cm 100% 0,30 AH 481 18,9 µS/cm 100% 0,30 10 AI 483 µS/cm 101% 0,60 AJ 479 µS/cm 100% 0,00 AK 481 µS/cm 100% 0,30 AL 483 µS/cm 101% 0,60 AM 86 µS/cm 18% -58,60 * AN 482 11 µS/cm 101% 0,45 AO 462 3 µS/cm 96% -2,54 AP 478,4 µS/cm 100% -0,09 AQ µS/cm AR 474 AS 393 * 8,4 µS/cm 99% -0,75 10 µS/cm 82% -12,82 110 100 90 80 70 60 A C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories AT 477 µS/cm 100% -0,30 AU 490 µS/cm 102% 1,64 AV 481 µS/cm 100% 0,30 3 AW µS/cm AX 471 5 µS/cm 98% -1,19 AY 471 30 µS/cm 98% -1,19 AZ 457 * 10,0 µS/cm 95% -3,28 BA 458 * 8,7 µS/cm 96% -3,13 BB 483 10 µS/cm 101% 0,60 BC 479 3 µS/cm 100% 0,00 BD 430 2 µS/cm 90% -7,31 BE 478 µS/cm 100% -0,15 BF 481 12 µS/cm 100% 0,30 BG 490 2,0 µS/cm 102% 1,64 BH 479 µS/cm 100% 0,00 BI 477 µS/cm 100% -0,30 BJ 475 µS/cm 99% -0,60 µS/cm 99% -0,52 µS/cm 99% -0,75 µS/cm 100% 0,15 * 29 BK µS/cm BL 475,5 BM 474 BN 480 9,5 28,8 BO BP µS/cm 479 Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation 14 All results 470 ± 17 98,0 ± 3,6 51 10,9 63 µS/cm 100% Outliers excl. 479 ± 2 100,1 ± 0,4 5 1,1 55 0,00 Unit µS/cm % µS/cm % Sample N131B Parameter Conductivity Target value ± U (k=2) IFA result ± U (k=2) Stability test 356 µS/cm ± 1 µS/cm 359 µS/cm ± 7 µS/cm µS/cm Lab Code Result ± Unit Recovery z-Score A 361 3 µS/cm 101% 1,00 5 B 359 µS/cm 101% 0,60 C 348 µS/cm 98% -1,61 D 360 µS/cm 101% 0,80 E 355 µS/cm 100% -0,20 F 323 µS/cm 91% -6,62 G 356 µS/cm 100% 0,00 H 360 11 µS/cm 101% 0,80 I 359 5 µS/cm 101% 0,60 J 355 µS/cm 100% -0,20 K 355 µS/cm 100% -0,20 L 356 µS/cm 100% 0,00 M 352 µS/cm 99% -0,80 * 5 10 N 359 µS/cm 101% 0,60 O 358 µS/cm 101% 0,40 P 358 µS/cm 101% 0,40 Q 356 µS/cm 100% 0,00 R 357 10 µS/cm 100% 0,20 S 363 7 µS/cm 102% 1,40 5 T 360 4,51 µS/cm 101% 0,80 U 363 18 µS/cm 102% 1,40 V 350 10 µS/cm 98% -1,20 W 353 2,6 µS/cm 99% -0,60 X 362 10,9 µS/cm 102% 1,20 Y 344 µS/cm 97% -2,41 Z 5% 17,8 Result [µS/cm] 10% 35,6 15% 53,4 409 15% 392 10% 374 5% 356 Target value ± U (k=2) 338 - 5% 320 - 10% 303 - 15% A C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Recovery [%] Deviation 140 Recovery 130 120 µS/cm AA 356 µS/cm 100% 0,00 AB 356 15 µS/cm 100% 0,00 AC 356 14 µS/cm 100% 0,00 AD 356 7 µS/cm 100% 0,00 AE 354 11 µS/cm 99% -0,40 AF 352 0,36 µS/cm 99% -0,80 AG 359 7 µS/cm 101% 0,60 AH 352 14,1 µS/cm 99% -0,80 7 AI 364 µS/cm 102% 1,61 AJ 358 µS/cm 101% 0,40 AK 357 µS/cm 100% 0,20 AL 356 µS/cm 100% 0,00 AM 149 µS/cm 42% -41,53 * AN 359 4 µS/cm 101% 0,60 AO 346 2 µS/cm 97% -2,01 AP 356,0 µS/cm 100% 0,00 AQ µS/cm AR 354 AS 293 * 6,3 µS/cm 99% -0,40 10 µS/cm 82% -12,64 110 100 90 80 70 60 A C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories AT 355 µS/cm 100% AU 362 µS/cm 102% 1,20 AV 353 5 µS/cm 99% -0,60 AX 353 5 µS/cm 99% -0,60 AY 350 30 µS/cm 98% -1,20 AZ 339 * 10,0 µS/cm 95% -3,41 BA 342 * 6,5 µS/cm 96% -2,81 BB 360 7 µS/cm 101% 0,80 BC 356 3 µS/cm 100% 0,00 BD 321 2 µS/cm 90% -7,02 BE 355 µS/cm 100% -0,20 BF 355 9 µS/cm 100% -0,20 BG 367 2,0 µS/cm 103% 2,21 BH 348 µS/cm 98% -1,61 BI 359 µS/cm 101% 0,60 BJ 353 21 µS/cm 99% -0,60 BL 357,8 7,2 BM 351 BN 350 AW µS/cm * BK µS/cm 21,0 BO BP -0,20 µS/cm 101% 0,36 µS/cm 99% -1,00 µS/cm 98% -1,20 µS/cm 357 Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation 11 All results 350 ± 9 98,4 ± 2,6 28 8,0 63 µS/cm 100% Outliers excl. 356 ± 2 100,0 ± 0,4 4 1,3 57 0,20 Unit µS/cm % µS/cm % Sample N131A Parameter Total hardness Target value ± U (k=2) IFA result ± U (k=2) 9,47 °d ± 0,07 °d 9,66 °d ± 0,58 °d Stability test ± U (k=2) 9,74 °d ± 0,58 °d Lab Code Result ± Unit A °d B °d C D Result [°d] °d 101% 0,18 °d 98% -0,81 °d 99% -0,49 °d 99% -0,25 °d 100% 0,11 °d 97% -0,95 100% 0,07 °d G 9,24 H 9,33 0,8 I °d J 9,4 K 9,5 L 9,2 0,1 M °d N °d O °d 9,49 0,2 Q °d 10,89 15% 10,42 10% 9,94 5% 9,47 Target value ± U (k=2) 9,00 - 5% 8,52 - 10% 8,05 - 15% A 9,4 0,9 °d 99% -0,25 S 9,11 0,91 °d 96% -1,27 T 9,83 °d 104% 1,27 U C B °d R E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Recovery [%] Deviation 140 Recovery °d V 9,2 0,9 °d 97% -0,95 W 9,36 0,03 °d 99% -0,39 X 9,3 1,4 °d 98% -0,60 Y °d Z °d AA 9,31 0,4 °d 98% -0,56 AC 9,60 1,73 °d 101% 0,46 AD 9,6 1,0 °d 101% 0,46 AE 9,5 1,1 °d 100% 0,11 AF 9,31 0,159 °d 98% -0,56 AG 9,37 0,94 °d 99% -0,35 AH 9,4 °d 99% -0,25 0,5 AI 9,3 °d 98% -0,60 AJ 9,46 °d 100% -0,04 AK 9,35 °d 99% -0,42 AL °d AM °d 9,67 0,02 °d 102% 0,70 9,2 0,1 °d 97% -0,95 AP 9,5 °d 100% 0,11 99% -0,25 °d 1,3 °d °d 100 90 80 70 60 C B AN 9,4 120 A AO AQ 130 110 °d AB AS 15% 1,421 °d F AR 10% 0,947 z-Score °d 9,52 E P Recovery 5% 0,474 E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories AT 9,2 °d 97% -0,95 AU 9,664 °d 102% 0,68 AV 9,56 °d 101% 0,32 -0,25 0,03 AW °d AX 9,4 0,5 °d 99% AY 9,5 0,2 °d 100% 0,11 AZ 9,4 °d 99% -0,25 BA °d BB 9,09 °d 96% -1,34 BC 9,3 1 °d 98% -0,60 BD 9,60 0,6 °d 101% 0,46 BE 9,4 °d 99% -0,25 BF 9,2 °d 97% -0,95 0,9 BG °d BH 9,47 °d 100% 0,00 BI 9,6 °d 101% 0,46 °d 99% -0,21 °d 96% -1,41 °d 101% 0,35 Outliers excl. 9,40 ± 0,07 99,3 ± 0,7 0,17 1,8 43 Unit °d % °d % BJ °d BK °d BL 9,41 BM 9,07 BN 9,57 0,19 0,718 BO °d BP Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation °d All results 9,40 ± 0,07 99,3 ± 0,7 0,17 1,8 43 Sample N131B Parameter Total hardness Target value ± U (k=2) IFA result ± U (k=2) 5,40 °d ± 0,05 °d 5,44 °d ± 0,33 °d Stability test ± U (k=2) 5,54 °d ± 0,33 °d Lab Code Result ± Unit A °d B °d C D Result [°d] °d 101% 0,19 °d 104% 1,23 °d 101% 0,37 °d 102% 0,62 °d 100% 0,00 °d 98% -0,62 101% 0,19 °d G 5,60 H 5,46 0,5 I °d J 5,5 K 5,4 L 5,3 0,1 M °d N °d O °d 5,43 0,2 Q °d 6,21 15% 5,94 10% 5,67 5% 5,40 Target value ± U (k=2) 5,13 - 5% 4,86 - 10% 4,59 - 15% A 5,3 0,5 °d 98% -0,62 S 5,13 0,51 °d 95% -1,67 T 5,81 °d 108% 2,53 U C B °d R E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Recovery [%] Deviation 140 Recovery °d V 5,2 0,5 °d 96% -1,23 W 5,37 0,006 °d 99% -0,19 X 5,4 0,8 °d 100% 0,00 Y °d Z °d AA 5,31 0,3 °d 98% -0,56 AC 5,42 0,98 °d 100% 0,12 AD 5,5 0,6 °d 102% 0,62 AE 5,5 0,7 °d 102% 0,62 AF 5,37 0,089 °d 99% -0,19 AG 5,34 0,54 °d 99% -0,37 AH 5,3 °d 98% -0,62 0,3 AI 5,2 °d 96% -1,23 AJ 5,43 °d 101% 0,19 AK 5,43 °d 101% 0,19 AL °d AM °d 5,56 0,02 °d 103% 0,99 5,1 0,1 °d 94% -1,85 AP 5,05 °d 94% -2,16 100% 0,12 °d 0,73 °d °d 100 90 80 70 60 C B AN 5,42 120 A AO AQ 130 110 °d AB AS 15% 0,810 °d F AR 10% 0,540 z-Score °d 5,43 E P Recovery 5% 0,270 E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories AT 5,3 AU 7,598 AV 5,46 * 0,01 AW °d 98% -0,62 °d 141% 13,57 °d 101% 0,37 0,00 °d AX 5,4 0,3 °d 100% AY 5,4 0,2 °d 100% 0,00 AZ 5,3 °d 98% -0,62 BA °d BB 5,12 °d 95% -1,73 BC 5,3 0,5 °d 98% -0,62 BD 5,53 0,6 °d 102% 0,80 BE 5,2 °d 96% -1,23 BF 5,6 °d 104% 1,23 0,6 BG °d BH 5,48 °d 101% 0,49 BI 5,5 °d 102% 0,62 °d 100% -0,12 °d 93% -2,35 °d 103% 0,93 Outliers excl. 5,38 ± 0,07 99,6 ± 1,2 0,16 3,0 42 Unit °d % °d % BJ °d BK °d BL 5,38 BM 5,02 BN 5,55 0,11 0,416 BO °d BP Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation °d All results 5,43 ± 0,15 100,5 ± 2,9 0,37 6,9 43 Sample N131A Parameter Alkalinity Target value ± U (k=2) IFA result ± U (k=2) 1,79 mmol/l ± 0,01 mmol/l 1,74 mmol/l ± 0,07 mmol/l Stability test mmol/l Lab Code Result ± Unit Recovery z-Score A 1,72 0,05 mmol/l 96% -1,56 0,05 B 1,77 mmol/l 99% -0,45 C 1,76 mmol/l 98% -0,67 D 1,75 mmol/l 98% -0,89 E 1,78 mmol/l 99% -0,22 F 1,73 mmol/l 97% -1,34 G 1,75 mmol/l 98% -0,89 H 1,78 0,07 mmol/l 99% -0,22 I 1,79 0,05 mmol/l 100% 0,00 J 1,61 mmol/l 90% -4,02 mmol/l 99% -0,45 mmol/l 99% -0,45 mmol/l 99% -0,45 mmol/l 94% -2,46 mmol/l 97% -1,12 mmol/l 98% -0,67 K 1,77 L 1,77 0,1 * 0,05 M N 1,77 1,68 P 1,74 Q 1,76 R 1,78 0,2 mmol/l 99% -0,22 S 1,78 0,11 mmol/l 99% -0,22 0,018 T 1,85 0,19 mmol/l 103% 1,34 0,1 U 15% 0,269 2,06 15% 1,97 10% 1,88 5% 1,79 Target value ± U (k=2) 1,70 - 5% 1,61 - 10% 1,52 - 15% A C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Recovery [%] Deviation 140 Recovery mmol/l V 1,76 0,18 mmol/l 98% -0,67 W 1,81 0,023 mmol/l 101% 0,45 X 1,8 0,18 mmol/l 101% 0,22 Y 1,75 mmol/l 98% -0,89 Z 130 120 mmol/l AA 1,79 mmol/l 100% 0,00 AB 1,77 0,1 mmol/l 99% -0,45 AC 1,77 0,07 mmol/l 99% -0,45 AD 1,75 0,12 mmol/l 98% -0,89 AE 1,77 0,08 mmol/l 99% -0,45 AF 1,79 0,005 mmol/l 100% 0,00 AG 1,79 AH 1,67 * 0,09 mmol/l 100% 0,00 0,183 mmol/l 93% -2,68 0,09 AI 1,81 mmol/l 101% 0,45 AJ 1,81 mmol/l 101% 0,45 AK 1,82 mmol/l 102% 0,67 -0,89 AL mmol/l AM 1,75 mmol/l 98% AN 1,95 * 0,08 mmol/l 109% 3,58 1,67 * 0,06 mmol/l 93% -2,68 AP 1,84 mmol/l 103% 1,12 101% 0,22 AQ mmol/l 1,8 0,079 mmol/l mmol/l 110 100 90 80 70 60 A 0,09 AO AS Result [mmol/l] 10% 0,179 mmol/l O AR 5% 0,090 C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories AT 0,87 AU 1,7966 AV 1,77 * 1,1129 AW mmol/l 49% mmol/l 100% -20,56 0,15 mmol/l 99% -0,45 mmol/l AX 1,72 0,04 mmol/l 96% -1,56 AY 1,78 0,02 mmol/l 99% -0,22 AZ 1,775 0,120 mmol/l 99% -0,34 BA 1,76 mmol/l 98% -0,67 BB 1,77 mmol/l 99% -0,45 BC 1,75 0,10 mmol/l 98% -0,89 BD 1,83 0,1 mmol/l 102% 0,89 BE 1,86 mmol/l 104% 1,56 BF 1,76 mmol/l 98% -0,67 mmol/l 99% -0,22 mmol/l 105% 2,01 0,2 BG mmol/l BH 1,78 BI 1,88 BJ 1,78 0,036 mmol/l 99% -0,22 BK 1,793 0,01 mmol/l 100% 0,07 BL 1,80 0,04 mmol/l 101% 0,22 BM 1,65 mmol/l 92% -3,13 0,163 mmol/l 96% -1,56 0,075 mmol/l 10% -35,98 0,05 mmol/l 99% BN 1,72 BO 0,18 BP 1,77 Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation * * * All results 1,73 ± 0,08 96,7 ± 4,6 0,24 13,9 60 Outliers excl. 1,78 ± 0,01 99,2 ± 0,7 0,03 1,9 52 -0,45 Unit mmol/l % mmol/l % Sample N131B Parameter Alkalinity Target value ± U (k=2) IFA result ± U (k=2) 2,96 mmol/l ± 0,02 mmol/l 2,89 mmol/l ± 0,12 mmol/l Stability test mmol/l Lab Code Result ± Unit Recovery z-Score A 2,83 0,05 mmol/l 96% -1,76 0,05 B 2,88 mmol/l 97% -1,08 C 2,91 mmol/l 98% -0,68 D 2,89 mmol/l 98% -0,95 E 2,97 mmol/l 100% 0,14 F 2,85 mmol/l 96% -1,49 G 2,90 mmol/l 98% -0,81 H 2,92 0,12 mmol/l 99% -0,54 I 2,95 0,05 mmol/l 100% -0,14 J 2,77 mmol/l 94% -2,57 mmol/l 98% -0,81 mmol/l 99% -0,54 mmol/l 96% -1,49 mmol/l 99% -0,54 mmol/l 91% -3,78 mmol/l 98% -0,95 mmol/l 99% -0,27 K 2,90 L 2,92 M 2,85 0,1 * 0,05 N 2,92 O 2,68 0,029 P 2,89 Q 2,94 R 2,90 0,3 mmol/l 98% -0,81 S 2,93 0,18 mmol/l 99% -0,41 T 3,00 0,30 mmol/l 101% 0,54 * 0,1 U V 2,91 0,29 mmol/l 98% -0,68 2,99 0,006 mmol/l 101% 0,41 X 2,88 0,29 mmol/l 97% -1,08 Y 2,92 mmol/l 99% -0,54 Z 15% 0,444 3,40 15% 3,26 10% 3,11 5% 2,96 Target value ± U (k=2) 2,81 - 5% 2,66 - 10% 2,52 - 15% A C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Recovery [%] Deviation 140 Recovery 130 120 mmol/l AA 2,96 mmol/l 100% 0,00 AB 2,79 0,1 mmol/l 94% -2,30 AC 2,93 0,12 mmol/l 99% -0,41 AD 2,92 0,2 mmol/l 99% -0,54 AE 2,93 0,12 mmol/l 99% -0,41 AF 2,93 0,005 mmol/l 99% -0,41 AG 2,96 AH 2,78 * 0,15 mmol/l 100% 0,00 0,416 mmol/l 94% -2,43 0,15 AI 2,97 mmol/l 100% 0,14 AJ 2,94 mmol/l 99% -0,27 AK 2,96 mmol/l 100% 0,00 mmol/l 101% 0,27 0,08 mmol/l 105% 2,03 0,11 mmol/l 94% -2,30 mmol/l 101% 0,27 101% 0,54 AL mmol/l AM 2,98 AN 3,11 AO 2,79 AP 2,98 * AQ AS Result [mmol/l] 10% 0,296 mmol/l W AR 5% 0,148 0,098 mmol/l mmol/l 100 90 80 70 60 A mmol/l 3 110 C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories AT 1,43 AU 2,9033 AV 2,92 * 0,0159 AW mmol/l 48% -20,68 mmol/l 98% -0,77 mmol/l 99% -0,54 mmol/l AX 2,88 0,04 mmol/l 97% -1,08 AY 2,93 0,02 mmol/l 99% -0,41 AZ 2,927 0,200 mmol/l 99% -0,45 BA 2,90 mmol/l 98% -0,81 BB 2,92 mmol/l 99% -0,54 BC 2,90 0,10 mmol/l 98% -0,81 BD 2,91 0,1 mmol/l 98% -0,68 BE 2,96 mmol/l 100% 0,00 BF 2,88 mmol/l 97% -1,08 0,3 BG mmol/l BH 2,93 mmol/l 99% -0,41 BI 2,92 mmol/l 99% -0,54 BJ 2,94 0,059 mmol/l 99% -0,27 BK 2,946 0,02 mmol/l 100% -0,19 BL 2,96 0,06 mmol/l 100% 0,00 BM 2,63 mmol/l 89% -4,46 0,272 mmol/l 97% -1,35 0,075 mmol/l 10% -35,95 0,09 mmol/l 99% BN 2,86 BO 0,30 BP 2,93 Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation * * All results 2,84 ± 0,13 96,0 ± 4,5 0,39 13,7 61 Outliers excl. 2,92 ± 0,02 98,6 ± 0,6 0,05 1,5 54 -0,41 Unit mmol/l % mmol/l % Sample N131A Parameter Hydrogen carbonate Target value ± U (k=2) IFA result ± U (k=2) Stability test 106 mg/l ± 1 mg/l 103 mg/l ± 4 mg/l Result [mg/l] mg/l Lab Code Result ± Unit Recovery z-Score A 102 3 mg/l 96% -1,26 98% -0,72 B mg/l 103,7 mg/l E mg/l F mg/l G mg/l H 109 4 I J mg/l 98 mg/l mg/l mg/l N mg/l O 0,94 92% -2,52 102% 0,63 100% 0,09 mg/l 106,3 5 Q mg/l 109 11 mg/l 103% 0,94 108 6,5 mg/l 102% 0,63 T 109,81 mg/l 104% 1,20 U 117 10% 111 5% 106 Target value ± U (k=2) 101 - 5% 95 - 10% 90 - 15% A C E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Recovery [%] Deviation 140 Recovery mg/l V 104 11 mg/l 98% -0,63 W 108 1,2 mg/l 102% 0,63 X 107 10,70 mg/l 101% 0,31 Y 106,75 mg/l 101% 0,24 Z 130 120 mg/l AA 106 mg/l 100% 0,00 AB 105 4 mg/l 99% -0,31 AC 105 4,2 mg/l 99% -0,31 AD 104 8,3 mg/l 98% -0,63 AE 105 5 mg/l 99% -0,31 AF 106 0,32 mg/l 100% 0,00 AG 106 5 mg/l 100% 0,00 AH 102,1 15,32 mg/l 96% -1,23 AI 107,4 5,4 mg/l 101% 0,44 101% 0,31 mg/l 98% -0,63 5,2 mg/l 110% 3,18 4 mg/l 96% -1,26 mg/l 106% 1,98 104% 1,19 AJ 110 100 90 80 70 mg/l 107 mg/l AL mg/l AM 104 AN 116,1 AO 102 AP 112,3 * AQ AS 15% B S AR 122 mg/l R AK 15% 15,9 mg/l 108 M P 103% mg/l K L 10% 10,6 mg/l C D 5% 5,3 A mg/l 109,8 4,9 mg/l mg/l 60 C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories AT 53 AU 109,6252 * 0,0064 AV 50% -16,67 mg/l 103% 1,14 96% -1,26 mg/l AW AX mg/l mg/l 102 3 AY mg/l mg/l AZ 105 mg/l 99% -0,31 BA 100 mg/l 94% -1,89 BB 105,0 mg/l 99% -0,31 BC 107 3 mg/l 101% 0,31 BD 112 6,1 mg/l 106% 1,89 BE 113,49 mg/l 107% 2,36 BF 104 mg/l 98% -0,63 10 BG mg/l BH 106 mg/l 100% 0,00 BI 114,7 mg/l 108% 2,74 BJ 109 mg/l 103% 0,94 2,2 BK mg/l BL 106,4 BM 100 BN 102 2,2 9,7 BO BP mg/l 100% 0,13 mg/l 94% -1,89 mg/l 96% -1,26 mg/l 104,9 Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation mg/l All results 105 ± 4 99,2 ± 3,3 9 8,4 45 99% Outliers excl. 106 ± 1 100,1 ± 1,4 4 3,4 43 -0,35 Unit mg/l % mg/l % Sample N131B Parameter Hydrogen carbonate Target value ± U (k=2) IFA result ± U (k=2) Stability test 177 mg/l ± 1 mg/l 173 mg/l ± 7 mg/l Result [mg/l] mg/l Lab Code Result ± Unit Recovery z-Score A 170 3 mg/l 96% -1,32 98% -0,70 B mg/l 173,3 mg/l E mg/l F mg/l G mg/l H 178 7 I J mg/l 169 mg/l mg/l mg/l N mg/l O 0,19 95% -1,51 101% 0,19 100% -0,09 mg/l 176,5 5 Q mg/l 177 18 mg/l 100% 0,00 179 10,7 mg/l 101% 0,38 T 179,97 mg/l 102% 0,56 U 195 10% 186 5% 177 Target value ± U (k=2) 168 - 5% 159 - 10% 150 - 15% A C E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Recovery [%] Deviation 140 Recovery mg/l V 178 W 197 X 173 Y 178,12 * 18 mg/l 101% 0,19 0,58 mg/l 111% 3,77 17,30 mg/l 98% -0,75 mg/l 101% 0,21 Z 130 120 mg/l AA 177 AB 167 AC AD AE AF mg/l 100% 0,00 6 mg/l 94% -1,88 176 7,0 mg/l 99% -0,19 175 14 mg/l 99% -0,38 176 7 mg/l 99% -0,19 175 0,32 mg/l 99% -0,38 * AG 178 9 mg/l 101% 0,19 AH 169,3 25,4 mg/l 96% -1,45 AI 178,3 8,9 mg/l 101% 0,24 101% 0,38 mg/l 101% 0,38 2,6 mg/l 105% 1,83 7 mg/l 96% -1,32 mg/l 103% 0,85 103% 1,15 AJ 110 100 90 80 70 mg/l 179 mg/l AL mg/l AM 179 AN 186,7 AO 170 AP 181,5 * AQ AS 15% B S AR 204 mg/l R AK 15% 26,6 mg/l 178 M P 101% mg/l K L 10% 17,7 mg/l C D 5% 8,9 A mg/l 183,1 6,0 mg/l mg/l 60 C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories AT 87 AU 177,1496 * 0,0159 AV 49% -16,95 mg/l 100% 0,03 98% -0,75 mg/l AW AX mg/l mg/l 173 3 AY mg/l mg/l AZ 176 mg/l 99% -0,19 BA 170 mg/l 96% -1,32 BB 175,5 mg/l 99% -0,28 BC 177 4 mg/l 100% 0,00 BD 177 6,1 mg/l 100% 0,00 BE 180,61 mg/l 102% 0,68 BF 173 mg/l 98% -0,75 15 BG mg/l BH 176 mg/l 99% -0,19 BI 178,2 mg/l 101% 0,23 BJ 179 mg/l 101% 0,38 3,6 BK mg/l BL 177,5 BM 160 BN 172 3,6 * 16,3 BO BP mg/l 100% 0,09 mg/l 90% -3,20 mg/l 97% -0,94 mg/l 175,7 Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation mg/l All results 174 ± 6 98,5 ± 3,3 14 8,3 45 99% Outliers excl. 176 ± 1 99,5 ± 0,8 3 1,9 40 -0,24 Unit mg/l % mg/l % Sample N131A Parameter Calcium Target value ± U (k=2) IFA result ± U (k=2) 37,5 mg/l ± 0,3 mg/l 38,0 mg/l ± 2,3 mg/l Stability test ± U (k=2) 38,2 mg/l ± 2,3 mg/l Lab Code Result ± Unit A mg/l B mg/l C D mg/l mg/l F mg/l G mg/l 37 4 I mg/l 102% 37,7 K 38,1 L 36,9 M 37,4 1 N 15% 5,63 43,1 15% 41,3 10% 39,4 5% 37,5 Target value ± U (k=2) 35,6 - 5% 33,8 - 10% 31,9 - 15% 0,46 99% -0,38 mg/l 101% 0,15 mg/l 102% 0,46 mg/l 98% -0,46 mg/l 100% -0,08 102% 0,61 mg/l O mg/l 38,3 1 Q mg/l A 36,6 3,7 mg/l 98% -0,69 S 35,1 3,6 mg/l 94% -1,83 T 39,38 3,9 mg/l 105% 1,43 U C B mg/l R E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Recovery [%] Deviation 140 Recovery mg/l V 36,1 3,6 mg/l 96% -1,07 W 37,6 0,10 mg/l 100% 0,08 X 37,6 5,6 mg/l 100% 0,08 Y 37,10 0,37 mg/l 99% -0,30 Z 130 120 mg/l AA 110 mg/l AB 37,1 3 mg/l 99% -0,30 AC 37,5 6,8 mg/l 100% 0,00 AD 39 1,6 mg/l 104% 1,14 AE 37,7 3,4 mg/l 101% 0,15 AF 37,1 0,58 mg/l 99% -0,30 AG 37,5 3,8 mg/l 100% 0,00 AH 37,03 1,481 mg/l 99% -0,36 AI 36,6 1,8 mg/l 98% -0,69 AJ 38,486 2,287 mg/l 103% 0,75 AK 37,5 mg/l 100% 0,00 AL mg/l AM mg/l 38,36 0,34 mg/l 102% 0,66 36,6 0,1 mg/l 98% -0,69 AP 36,9 2,1 mg/l 98% -0,46 AQ 39,3 4,7 mg/l 105% 1,37 97% -0,91 mg/l 36,3 0,1 mg/l 90 80 70 60 C B AN AR 100 A AO AS 10% 3,75 z-Score mg/l J P Result [mg/l] mg/l 38,1 E H Recovery 5% 1,88 E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories AT 35 mg/l 93% -1,90 AU 38,2966 0,0052 mg/l 102% 0,61 AV 37,80 0,357 mg/l 101% 0,23 -0,61 AW mg/l AX 36,7 1,9 mg/l 98% AY 38,0 0,6 mg/l 101% 0,38 AZ 36,1 2,0 mg/l 96% -1,07 BB 34,93 3,48 mg/l 93% -1,96 BC 37 1 mg/l 99% -0,38 BD 36,9 1,7 mg/l 98% -0,46 BE 37,58 mg/l 100% 0,06 BF 37,7 mg/l 101% 0,15 mg/l 101% 0,30 mg/l 103% 1,00 mg/l 98% -0,69 mg/l 98% -0,53 2,31 mg/l 103% 0,76 1,39 mg/l 110% 2,73 Outliers excl. 37,3 ± 0,4 99,6 ± 1,1 1,0 2,7 45 Unit mg/l % mg/l % BA mg/l 4 BG mg/l BH 37,9 BI 38,81 0,3 BJ mg/l BK mg/l BL 36,6 BM 36,8 BN 38,5 BO 41,08 0,7 * BP Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation mg/l All results 37,4 ± 0,5 99,8 ± 1,2 1,1 3,1 46 Sample N131B Parameter Calcium Target value ± U (k=2) IFA result ± U (k=2) 27,5 mg/l ± 0,3 mg/l 27,7 mg/l ± 1,7 mg/l Stability test ± U (k=2) 28,1 mg/l ± 1,7 mg/l Lab Code Result ± Unit A mg/l B mg/l C D mg/l mg/l F mg/l G mg/l 28 3 I mg/l 101% 27,5 K 27,7 L 26,9 1 0,52 mg/l 100% 0,00 mg/l 101% 0,21 mg/l 98% -0,62 102% 0,52 mg/l N mg/l O mg/l 28,0 1 Q mg/l 15% 30,3 10% 28,9 5% 27,5 Target value ± U (k=2) 26,1 - 5% 24,8 - 10% 23,4 - 15% A C B R 26,7 2,7 mg/l 97% -0,83 S 26,0 2,7 mg/l 95% -1,56 T 29,81 3,0 mg/l 108% 2,40 E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Recovery [%] Deviation 140 Recovery mg/l V 26,5 2,7 mg/l 96% -1,04 W 27,6 0,06 mg/l 100% 0,10 4,2 mg/l 103% 0,83 5,02 mg/l 120% 5,65 99% -0,31 X 28,3 Y 32,94 * Z 130 120 mg/l AA 110 mg/l AB 27,2 3 mg/l AC 27,3 4,9 mg/l 99% -0,21 AD 28 1,1 mg/l 102% 0,52 AE 28,4 2,6 mg/l 103% 0,94 AF 27,4 0,60 mg/l 100% -0,10 AG 27,3 2,7 mg/l 99% -0,21 AH 27,1 1,084 mg/l 99% -0,42 AI 26,4 1,3 mg/l 96% -1,14 AJ 28,285 2,344 mg/l 103% 0,82 AK 27,3 mg/l 99% -0,21 AL mg/l AM mg/l 28,28 0,10 mg/l 103% 0,81 26,1 0,1 mg/l 95% -1,45 AP 26,7 1,5 mg/l 97% -0,83 AQ 28,6 3,4 mg/l 104% 1,14 101% 0,37 mg/l 27,86 0,1 mg/l 90 80 70 60 C B AN AR 100 A AO AS 31,6 mg/l U 15% 4,13 0,31 102% M 10% 2,75 z-Score mg/l J P Result [mg/l] mg/l 27,8 E H Recovery 5% 1,38 E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories AT 25 mg/l 91% -2,60 AU 28,0852 0,0067 mg/l 102% 0,61 AV 27,75 0,357 mg/l 101% 0,26 0,73 AW mg/l AX 28,2 1,5 mg/l 103% AY 27,6 0,6 mg/l 100% 0,10 AZ 26,9 2,0 mg/l 98% -0,62 BB 25,42 2,55 mg/l 92% -2,16 BC 27 1 mg/l 98% -0,52 BD 27,0 1,7 mg/l 98% -0,52 BE 28,18 mg/l 102% 0,71 BF 28,7 mg/l 104% 1,25 mg/l 103% 0,83 mg/l 104% 1,04 mg/l 99% -0,21 mg/l 95% -1,45 BA mg/l 3 BG mg/l BH 28,3 BI 28,50 0,3 BJ mg/l BK mg/l BL 27,3 0,5 BM 26,1 BN 28,5 1,71 mg/l 104% 1,04 BO 25,05 1,39 mg/l 91% -2,55 BP Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation mg/l All results 27,5 ± 0,5 100,2 ± 1,9 1,3 4,7 45 Outliers excl. 27,4 ± 0,4 99,7 ± 1,5 1,0 3,7 44 Unit mg/l % mg/l % Sample N131A Parameter Magnesium Target value ± U (k=2) IFA result ± U (k=2) 18,3 mg/l ± 0,2 mg/l 18,8 mg/l ± 1,1 mg/l Stability test ± U (k=2) 19,0 mg/l ± 1,1 mg/l Lab Code Result ± Unit A mg/l B mg/l C D mg/l mg/l F mg/l G mg/l 18 1 I mg/l 98% 17,9 K 18,0 L 17,7 M 17,0 1 * N 15% 2,75 21,0 15% 20,1 10% 19,2 5% 18,3 Target value ± U (k=2) 17,4 - 5% 16,5 - 10% 15,6 - 15% -0,46 98% -0,46 mg/l 98% -0,61 mg/l 98% -0,46 mg/l 97% -0,91 mg/l 93% -1,97 98% -0,46 mg/l O mg/l 18,0 0,5 Q mg/l A 18,5 1,9 mg/l 101% 0,30 S 18,3 1,9 mg/l 100% 0,00 T 18,77 1,9 mg/l 103% 0,71 U C B mg/l R E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Recovery [%] Deviation 140 Recovery mg/l V 18,2 1,8 mg/l 99% -0,15 W 18,3 0,06 mg/l 100% 0,00 X 17,5 2,6 mg/l 96% -1,21 Y 18,03 0,23 mg/l 99% -0,41 -0,61 Z 130 120 mg/l AA 110 mg/l AB 17,9 AC 18,8 AD 18 AE AF 2,2 mg/l 98% 3,4 mg/l 103% 0,76 1,1 mg/l 98% -0,46 18,2 1,7 mg/l 99% -0,15 17,9 0,59 mg/l 98% -0,61 * AG 17,8 1,8 mg/l 97% -0,76 AH 18,23 1,094 mg/l 100% -0,11 AI 18,2 0,9 mg/l 99% -0,15 AJ 17,586 2,431 mg/l 96% -1,08 AK 17,9 mg/l 98% -0,61 AL mg/l AM mg/l 18,64 0,10 mg/l 102% 0,52 17,9 0,1 mg/l 98% -0,61 AP 18,0 1,4 mg/l 98% -0,46 AQ 17,7 2,1 mg/l 97% -0,91 99% -0,35 mg/l 18,07 0,15 mg/l 90 80 70 60 C B AN AR 100 A AO AS 10% 1,83 z-Score mg/l J P Result [mg/l] mg/l 18,0 E H Recovery 5% 0,92 E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories AT 19 mg/l 104% AU 18,7027 0,0455 mg/l 102% 0,61 AV 18,18 0,916 mg/l 99% -0,18 AX 18,4 1,0 mg/l 101% 0,15 AY 18,2 0,6 mg/l 99% -0,15 AZ 19,0 2,0 mg/l 104% 1,06 * AW 1,06 mg/l * BA mg/l BB 18,22 1,45 mg/l 100% -0,12 BC 18 1 mg/l 98% -0,46 BD 17,9 0,8 mg/l 98% -0,61 BE 18,21 mg/l 100% -0,14 BF 17,5 mg/l 96% -1,21 2 BG mg/l BH 18,4 BI 18,18 0,3 BJ mg/l 101% 0,15 mg/l 99% -0,18 mg/l BK mg/l BL 18,7 BM 17,0 BN 18,2 BO 15,68 0,4 mg/l 102% 0,61 mg/l 93% -1,97 2,19 mg/l 99% -0,15 0,43 mg/l 86% -3,98 * * BP Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation mg/l All results 18,1 ± 0,2 98,7 ± 1,2 0,6 3,1 46 Outliers excl. 18,1 ± 0,1 98,9 ± 0,7 0,3 1,7 40 Unit mg/l % mg/l % Sample N131B Parameter Magnesium Target value ± U (k=2) IFA result ± U (k=2) 6,73 mg/l ± 0,08 mg/l 6,76 mg/l ± 0,41 mg/l Stability test ± U (k=2) 6,91 mg/l ± 0,41 mg/l Lab Code Result ± Unit A mg/l B mg/l C D mg/l mg/l F mg/l G mg/l 6,7 0,4 I mg/l 98% 7,2 K 6,8 L 6,8 0,5 -0,12 mg/l 107% 1,94 mg/l 101% 0,29 mg/l 101% 0,29 98% -0,54 mg/l N mg/l O mg/l 6,6 0,5 Q mg/l 15% 7,40 10% 7,07 5% 6,73 Target value ± U (k=2) 6,39 - 5% 6,06 - 10% 5,72 - 15% A C B R 6,76 0,68 mg/l 100% 0,12 S 6,53 0,67 mg/l 97% -0,83 T 7,11 0,7 mg/l 106% 1,57 E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Recovery [%] Deviation 140 Recovery mg/l V 6,69 0,70 mg/l 99% -0,17 W 6,77 0,01 mg/l 101% 0,17 X 6,3 0,9 mg/l 94% -1,77 Y 6,19 0,05 mg/l 92% -2,23 Z 130 120 mg/l AA 110 mg/l AB 6,57 0,8 mg/l 98% -0,66 AC 6,91 1,2 mg/l 103% 0,74 AD 7 0,4 mg/l 104% 1,11 AE 6,72 0,65 mg/l 100% -0,04 AF 6,66 0,138 mg/l 99% -0,29 AG 6,58 0,66 mg/l 98% -0,62 AH 6,58 0,395 mg/l 98% -0,62 AI 6,60 0,33 mg/l 98% -0,54 AJ 6,630 0,230 mg/l 99% -0,41 AK 7,1 mg/l 105% 1,53 AL mg/l AM mg/l 6,94 0,12 mg/l 103% 0,87 6,5 0,1 mg/l 97% -0,95 AP 7,15 0,23 mg/l 106% 1,73 AQ 6,7 0,8 mg/l 100% -0,12 6,64 0,15 99% -0,37 mg/l mg/l 90 80 70 60 C B AN AR 100 A AO AS 7,74 mg/l U 15% 1,010 -0,45 100% M 10% 0,673 z-Score mg/l J P Result [mg/l] mg/l 6,62 E H Recovery 5% 0,337 E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories AT 7,1 mg/l 105% AU 6,9757 0,0832 mg/l 104% 1,01 AV 6,70 0,916 mg/l 100% -0,12 AX 6,5 0,4 mg/l 97% -0,95 AY 6,6 0,6 mg/l 98% -0,54 AZ 6,5 1,0 mg/l 97% -0,95 AW 1,53 mg/l BA mg/l BB 6,76 0,55 mg/l 100% 0,12 BC 6,6 1 mg/l 98% -0,54 BD 6,7 0,8 mg/l 100% -0,12 BE 6,83 mg/l 101% 0,41 BF 6,76 mg/l 100% 0,12 0,7 BG mg/l BH 6,84 BI 6,52 0,25 BJ mg/l 102% 0,45 mg/l 97% -0,87 mg/l BK mg/l BL 6,8 BM 5,96 BN 6,83 BO 9,12 0,2 mg/l 101% 0,29 mg/l 89% -3,18 0,819 mg/l 101% 0,41 0,43 mg/l 136% 9,86 Outliers excl. 6,73 ± 0,09 100,0 ± 1,3 0,22 3,2 43 Unit mg/l % mg/l % * * BP Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation mg/l All results 6,77 ± 0,17 100,5 ± 2,6 0,43 6,4 45 Sample N131A Parameter Sodium Target value ± U (k=2) IFA result ± U (k=2) 26,8 mg/l ± 0,2 mg/l 27,3 mg/l ± 1,6 mg/l Stability test ± U (k=2) 27,5 mg/l ± 1,7 mg/l Lab Code Result ± Unit A mg/l B mg/l C D Result [mg/l] mg/l mg/l F mg/l G mg/l 27 2 mg/l I mg/l J mg/l K mg/l L mg/l M mg/l N mg/l O mg/l P mg/l Q mg/l 101% 101% 30,8 15% 29,5 10% 28,1 5% 26,8 Target value ± U (k=2) 25,5 - 5% 24,1 - 10% 22,8 - 15% 0,21 A C B 26,4 2,6 mg/l 99% -0,41 S 27,1 2,8 mg/l 101% 0,31 T 26,57 2,7 mg/l 99% -0,24 E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Recovery [%] Deviation 140 Recovery mg/l V 26,0 2,6 mg/l 97% -0,83 W 26,6 0,12 mg/l 99% -0,21 X 26,3 3,9 mg/l 98% -0,52 Y 26,06 0,04 mg/l 97% -0,77 Z 130 120 mg/l AA 110 mg/l AB 26,4 4 mg/l 99% -0,41 AC 26,8 4,8 mg/l 100% 0,00 AD 27 1,1 mg/l 101% 0,21 AE 26,9 2,2 mg/l 100% 0,10 AF 26,7 0,27 mg/l 100% -0,10 AG 25,6 2,6 mg/l 96% -1,24 AH 26,78 1,607 mg/l 100% -0,02 1,4 mg/l 103% 0,83 2,793 mg/l 93% -2,08 mg/l 100% 0,10 AI 27,6 AJ 24,798 AK 26,9 * AL mg/l AM mg/l AN 26,83 AO 30 * mg/l 100% 0,03 0,2 mg/l 112% 3,32 AP 27,1 1,5 mg/l 101% 0,31 27,0 2,7 mg/l 101% 0,21 100% 0,00 mg/l 26,8 0,1 mg/l 90 80 70 60 C B 1,00 AR 100 A AQ AS 15% 4,02 0,21 R U 10% 2,68 z-Score mg/l 27,0 E H Recovery 5% 1,34 E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories AT mg/l AU 27,8707 0,0450 mg/l 104% 1,11 AV 26,55 0,204 mg/l 99% -0,26 AX 26,1 1,4 mg/l 97% -0,73 AY 26,8 0,2 mg/l 100% 0,00 AZ 26,6 2,0 mg/l 99% -0,21 BB 26,46 2,37 mg/l 99% -0,35 BC 26 2 mg/l 97% -0,83 BD 26,0 0,8 mg/l 97% -0,83 BE 26,38 mg/l 98% -0,44 BF 26,7 mg/l 100% -0,10 mg/l 98% -0,62 mg/l 101% 0,33 mg/l 93% -1,97 mg/l 101% 0,31 Outliers excl. 26,7 ± 0,2 99,5 ± 0,8 0,5 1,8 35 Unit mg/l % mg/l % AW mg/l BA mg/l 3 BG mg/l BH 26,2 BI 27,12 0,2 BJ mg/l BK mg/l BL mg/l BM 24,9 BN 27,1 * 1,76 BO mg/l BP Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation mg/l All results 26,7 ± 0,4 99,5 ± 1,4 0,8 3,1 38 Sample N131B Parameter Sodium Target value ± U (k=2) IFA result ± U (k=2) 36,8 mg/l ± 0,3 mg/l 37,4 mg/l ± 2,2 mg/l Stability test ± U (k=2) 37,7 mg/l ± 2,3 mg/l Lab Code Result ± Unit A mg/l B mg/l C D Result [mg/l] mg/l mg/l F mg/l G mg/l 36 2 mg/l I mg/l J mg/l K mg/l L mg/l M mg/l N mg/l O mg/l P mg/l Q mg/l 99% 98% 42,3 15% 40,5 10% 38,6 5% 36,8 Target value ± U (k=2) 35,0 - 5% 33,1 - 10% 31,3 - 15% -0,60 A C B 36,1 3,6 mg/l 98% -0,53 S 37,9 3,9 mg/l 103% 0,83 T 36,32 3,6 mg/l 99% -0,36 E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Recovery [%] Deviation 140 Recovery mg/l V 35,6 3,6 mg/l 97% -0,91 W 36,3 0,30 mg/l 99% -0,38 X 34,4 5,2 mg/l 93% -1,81 Y 35,44 0,22 mg/l 96% -1,03 Z 130 120 mg/l AA 110 mg/l AB 36,1 6 mg/l 98% -0,53 AC 36,7 6,6 mg/l 100% -0,08 AD 37 1,5 mg/l 101% 0,15 AE 37,0 3,0 mg/l 101% 0,15 AF 36,2 0,27 mg/l 98% -0,45 AG 34,7 3,5 mg/l 94% -1,59 AH 38,2 2,292 mg/l 104% 1,06 AI 37,3 1,9 mg/l 101% 0,38 AJ 34,591 2,727 mg/l 94% -1,67 AK 36,9 mg/l 100% 0,08 AL mg/l AM mg/l AN 36,56 AO 41 * mg/l 99% -0,18 0,2 mg/l 111% 3,17 AP 37,4 0,93 mg/l 102% 0,45 37,6 3,8 mg/l 102% 0,60 103% 0,96 mg/l 38,07 0,1 mg/l 90 80 70 60 C B 1,38 AR 100 A AQ AS 15% 5,52 -0,38 R U 10% 3,68 z-Score mg/l 36,3 E H Recovery 5% 1,84 E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories AT mg/l AU 38,205 0,0472 mg/l 104% 1,06 AV 36,36 0,109 mg/l 99% -0,33 AX 36,3 1,9 mg/l 99% -0,38 AY 36,6 0,2 mg/l 99% -0,15 AZ 36,5 2,0 mg/l 99% -0,23 AW mg/l BA mg/l BB 35,26 3,19 mg/l 96% -1,16 BC 36 2 mg/l 98% -0,60 BD 35,5 0,8 mg/l 96% -0,98 BE 37,30 mg/l 101% 0,38 BF 36,8 mg/l 100% 0,00 mg/l 94% -1,59 mg/l 102% 0,43 mg/l 88% -3,40 mg/l 100% 0,00 Outliers excl. 36,5 ± 0,5 99,1 ± 1,2 1,0 2,8 36 Unit mg/l % mg/l % 4 BG mg/l BH 34,7 BI 37,37 0,2 BJ mg/l BK mg/l BL mg/l BM 32,3 BN 36,8 * 2,39 BO mg/l BP Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation mg/l All results 36,5 ± 0,6 99,1 ± 1,7 1,4 3,9 38 Sample N131A Parameter Potassium Target value ± U (k=2) IFA result ± U (k=2) 2,52 mg/l ± 0,03 mg/l 2,58 mg/l ± 0,21 mg/l Stability test ± U (k=2) 2,66 mg/l ± 0,21 mg/l Lab Code Result ± Unit A mg/l B mg/l C D Result [mg/l] mg/l mg/l F mg/l G mg/l 2,5 0,2 mg/l I mg/l J mg/l K mg/l L mg/l M mg/l N mg/l O mg/l P mg/l Q mg/l 92% 99% 2,90 15% 2,77 10% 2,65 5% 2,52 Target value ± U (k=2) 2,39 - 5% 2,27 - 10% 2,14 - 15% -0,16 A C B 2,42 0,24 mg/l 96% -0,81 S 2,38 0,28 mg/l 94% -1,13 T 2,54 0,27 mg/l 101% 0,16 E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Recovery [%] Deviation 140 Recovery mg/l V 2,36 0,24 mg/l 94% -1,30 W 2,47 0,03 mg/l 98% -0,40 X 2,51 0,4 mg/l 100% -0,08 Y 2,36 0,06 mg/l 94% -1,30 Z 130 120 mg/l AA 110 mg/l AB 2,48 AC 2,39 AD 2 * 0,4 mg/l 98% -0,32 0,43 mg/l 95% -1,05 0,2 mg/l 79% -4,21 AE 2,42 0,20 mg/l 96% -0,81 AF 2,63 0,060 mg/l 104% 0,89 AG 2,71 0,27 mg/l 108% 1,54 AH 2,71 0,271 mg/l 108% 1,54 AI 2,7 0,1 mg/l 107% 1,46 AJ 2,543 0,270 mg/l 101% 0,19 AK 2,5 mg/l 99% -0,16 AL mg/l AM mg/l 2,56 0,10 mg/l 102% 0,32 2,5 0,02 mg/l 99% -0,16 AP 2,77 0,15 mg/l 110% 2,02 AQ 2,5 0,3 mg/l 99% -0,16 120% 4,05 mg/l 3,02 * 0,05 mg/l 90 80 70 60 C B AN AR 100 A AO AS 15% 0,378 -1,70 R U 10% 0,252 z-Score mg/l 2,31 E H Recovery 5% 0,126 E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories AT mg/l AU 7,3105 AV 2,47 * 0,0078 mg/l 290% 38,80 0,053 mg/l 98% -0,40 AW mg/l AX 2,60 0,18 mg/l 103% 0,65 AY 2,5 0,06 mg/l 99% -0,16 AZ 2,8 0,3 mg/l 111% 2,27 1,05 BA mg/l BB 2,65 0,24 mg/l 105% BC 2,6 0,5 mg/l 103% 0,65 BD 2,33 0,3 mg/l 92% -1,54 BE 2,71 mg/l 108% 1,54 BF 2,52 mg/l 100% 0,00 mg/l 100% 0,08 mg/l 102% 0,40 0,3 BG mg/l BH 2,53 BI 2,57 0,08 BJ mg/l BK mg/l BL mg/l BM 2,68 BN 2,51 0,251 BO 106% 1,30 mg/l 100% -0,08 Outliers excl. 2,54 ± 0,06 100,6 ± 2,3 0,13 5,0 35 Unit mg/l % mg/l % mg/l BP Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation mg/l mg/l All results 2,66 ± 0,35 105,5 ± 13,9 0,79 29,8 38 Sample N131B Parameter Potassium Target value ± U (k=2) IFA result ± U (k=2) 7,55 mg/l ± 0,04 mg/l 7,65 mg/l ± 0,61 mg/l Stability test ± U (k=2) 7,87 mg/l ± 0,63 mg/l Lab Code Result ± Unit A mg/l B mg/l C D Result [mg/l] mg/l mg/l F mg/l G mg/l 7,5 0,5 mg/l I mg/l J mg/l K mg/l L mg/l M mg/l N mg/l O mg/l P mg/l Q mg/l 102% 99% 8,68 15% 8,31 10% 7,93 5% 7,55 Target value ± U (k=2) 7,17 - 5% 6,80 - 10% 6,42 - 15% -0,14 A C B 7,20 0,72 mg/l 95% -0,95 S 7,43 0,88 mg/l 98% -0,32 T 7,82 0,81 mg/l 104% 0,73 E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Recovery [%] Deviation 140 Recovery mg/l V 7,12 0,72 mg/l 94% -1,16 W 7,29 0,04 mg/l 97% -0,70 1,2 mg/l 108% 1,62 0,22 mg/l 469% 75,39 X 8,15 Y 35,44 * Z 130 120 mg/l AA 110 mg/l AB 7,55 1,2 mg/l 100% 0,00 AC 7,22 1,30 mg/l 96% -0,89 AD 7 0,6 mg/l 93% -1,49 AE 7,50 0,52 mg/l 99% -0,14 AF 7,63 0,257 mg/l 101% 0,22 AG 7,76 0,78 mg/l 103% 0,57 AH 7,51 0,751 mg/l 99% -0,11 AI 7,9 0,4 mg/l 105% 0,95 AJ 7,440 0,270 mg/l 99% -0,30 AK 7,6 mg/l 101% 0,14 AL mg/l AM mg/l 7,45 0,34 mg/l 99% -0,27 7,6 0,06 mg/l 101% 0,14 AP 7,74 0,24 mg/l 103% 0,51 AQ 7,5 0,9 mg/l 99% -0,14 7,36 0,05 97% -0,51 mg/l mg/l 90 80 70 60 C B AN AR 100 A AO AS 15% 1,133 0,41 R U 10% 0,755 z-Score mg/l 7,70 E H Recovery 5% 0,378 E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories AT mg/l AU 2,3947 AV 7,46 * 0,0608 mg/l 32% -13,94 0,053 mg/l 99% -0,24 0,95 AW mg/l AX 7,9 0,4 mg/l 105% AY 7,6 0,06 mg/l 101% 0,14 AZ 7,2 0,7 mg/l 95% -0,95 BB 7,58 0,69 mg/l 100% 0,08 BC 7,5 1 mg/l 99% -0,14 BD 6,95 0,3 mg/l 92% -1,62 BE 8,53 mg/l 113% 2,65 BF 7,81 mg/l 103% 0,70 mg/l 98% -0,41 mg/l 102% 0,35 mg/l 86% -2,87 mg/l 101% 0,16 Outliers excl. 7,52 ± 0,12 99,6 ± 1,6 0,26 3,5 34 Unit mg/l % mg/l % BA mg/l * 0,8 BG mg/l BH 7,40 BI 7,68 0,08 BJ mg/l BK mg/l BL mg/l BM 6,49 BN 7,61 * 0,761 BO mg/l BP Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation mg/l All results 8,12 ± 2,05 107,5 ± 27,1 4,64 57,1 38 Sample N131A Parameter Nitrate Target value ± U (k=2) IFA result ± U (k=2) 50,5 mg/l ± 1,0 mg/l 49,2 mg/l ± 2,0 mg/l Lab Code Result [mg/l] mg/l Stability test Result ± A Unit Recovery 46,3 mg/l 92% -2,38 D 47,2 mg/l 93% -1,87 mg/l 98% -0,54 E 58,1 15% 55,6 10% 53,0 5% 50,5 Target value ± U (k=2) 48,0 - 5% 45,5 - 10% 42,9 - 15% mg/l F mg/l 49,55 H 49 2 mg/l 97% -0,85 I 50,0 0,8 mg/l 99% -0,28 J 49,1 mg/l 97% -0,79 K 46,4 mg/l 92% -2,32 mg/l 93% -1,98 mg/l 99% -0,28 mg/l 93% -1,98 mg/l 98% -0,68 L mg/l M 47 N 50,0 0,502 O mg/l P 47 Q 49,3 R 49,2 4,9 mg/l 97% -0,74 S 48,2 2,2 mg/l 95% -1,30 2 T 46,88 3,9 mg/l 93% -2,05 U 48,7 4,9 mg/l 96% -1,02 V 49,13 4,9 mg/l 97% -0,78 W 48,1 0,30 mg/l 95% -1,36 6,8 mg/l 90% -3,00 0,07 mg/l 108% 2,16 X 45,2 Y 54,31 * Z >35 mg/l AA 49,6 mg/l • 98% -0,51 AB 50,9 4 mg/l 101% 0,23 AC 48,6 4,4 mg/l 96% -1,07 AD 49 3,4 mg/l 97% -0,85 AE 49,8 4,5 mg/l 99% -0,40 AF 48,9 0,57 mg/l 97% -0,91 AG 49,5 5,0 mg/l 98% -0,57 AH 48,823 1,9529 mg/l 97% -0,95 AI 49,7 1,5 mg/l 98% -0,45 98% -0,68 95% -1,30 AJ AK 15% 7,58 mg/l C G 10% 5,05 z-Score mg/l B 5% 2,53 A C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Recovery [%] Deviation 140 Recovery 130 120 110 100 90 80 70 mg/l 49,3 mg/l AL mg/l AM 48,2 1,1 mg/l A AN 49,35 0,62 mg/l 98% -0,65 AO 51,2 0,4 mg/l 101% 0,40 AP 50,2 AQ 47,6 AR 44,1 AS 65,97 60 mg/l 99% -0,17 9,0 mg/l 94% -1,64 * 8,8 mg/l 87% -3,62 * 0,15 mg/l 131% 8,75 C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories AT AU AV 52,8 40,2026 * 42,30 * mg/l 105% 1,30 0,0250 mg/l 80% -5,83 0,451 mg/l 84% -4,64 -0,85 AW mg/l AX 49 2 mg/l 97% AY 50,5 0,5 mg/l 100% 0,00 AZ 49,6 3,0 mg/l 98% -0,51 BB 50,65 4,54 mg/l 100% 0,08 BC 50 2 mg/l 99% -0,28 0,4 mg/l 97% -0,85 mg/l 80% -5,75 BA mg/l BD 49,0 BE 40,33 BF 49,6 5 mg/l 98% -0,51 BG 49,8 3,03 mg/l 99% -0,40 BH 52,9 0,8 mg/l 105% 1,36 BI 50,25 mg/l 100% -0,14 BJ 48,4 mg/l 96% -1,19 * 3,9 BK mg/l BL 51,4 BM 49,2 3,1 mg/l 102% 0,51 mg/l 97% -0,74 BN 52,9 5,55 mg/l 105% 1,36 BO 46,47 0,40 mg/l 92% -2,28 BP Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation mg/l All results 49,0 ± 1,3 97,1 ± 2,5 3,5 7,2 55 Outliers excl. 49,2 ± 0,6 97,4 ± 1,2 1,6 3,3 49 Unit mg/l % mg/l % Sample N131B Parameter Nitrate Target value ± U (k=2) IFA result ± U (k=2) 4,87 mg/l ± 0,11 mg/l 4,62 mg/l ± 0,18 mg/l Stability test Lab Code Result [mg/l] mg/l Result ± A Unit Recovery 15% 0,731 5,60 15% 5,36 10% 5,11 5% 4,87 Target value ± U (k=2) 4,63 - 5% 4,38 - 10% 4,14 - 15% mg/l C 4,20 mg/l 86% -3,93 D 4,56 mg/l 94% -1,82 mg/l 98% -0,65 E mg/l F mg/l G 4,76 H 4,7 0,1 mg/l 97% -1,00 I 4,7 0,1 mg/l 97% -1,00 J 3,8 mg/l 78% -6,28 K 4,82 mg/l 99% -0,29 mg/l 90% -2,76 mg/l 100% -0,12 mg/l 92% -2,17 mg/l 98% -0,70 * L mg/l M 4,4 N 4,85 0,049 O mg/l P 4,5 Q 4,75 2 R 4,7 0,5 mg/l 97% -1,00 S 4,73 0,21 mg/l 97% -0,82 T 4,94 0,4 mg/l 101% 0,41 U 4,75 0,48 mg/l 98% -0,70 V 4,72 W 3,90 * 0,5 mg/l 97% -0,88 0,06 mg/l 80% -5,69 X 4,2 0,6 mg/l 86% -3,93 Y 4,47 0,07 mg/l 92% -2,35 0,15 mg/l 78% -6,22 mg/l 97% -1,00 Z 3,81 AA 4,70 AB 4,79 0,3 mg/l 98% -0,47 AC 4,87 0,44 mg/l 100% 0,00 AD 5 0,2 mg/l 103% 0,76 AE 4,65 0,42 mg/l 95% -1,29 AF 4,72 0,09 mg/l 97% -0,88 * AG 4,93 0,49 mg/l 101% 0,35 AH 4,626 0,185 mg/l 95% -1,43 AI 4,6 0,1 mg/l 94% -1,58 99% -0,41 125% 7,10 AJ AK 10% 0,487 z-Score mg/l B 5% 0,244 A C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Recovery [%] Deviation 140 Recovery 130 120 110 100 90 80 70 mg/l 4,8 mg/l AL mg/l AM 6,08 mg/l * A AN 4,71 0,18 mg/l 97% -0,94 AO 4,9 0,1 mg/l 101% 0,18 AP 5,05 AQ 4,6 AR 3,45 AS 5,09 * 60 mg/l 104% 1,06 0,9 mg/l 94% -1,58 0,89 mg/l 71% -8,33 0,15 mg/l 105% 1,29 C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories AT 5,3 AU 6,2260 mg/l 109% 0,0119 mg/l 128% AV 7,96 4,39 0,340 mg/l 90% -2,82 AX 4,8 0,3 mg/l 99% -0,41 AY 4,8 0,5 mg/l 99% -0,41 AZ 4,5 0,5 mg/l 92% -2,17 * AW 2,52 mg/l BA mg/l BB 4,90 0,43 mg/l 101% 0,18 BC 4,8 0,8 mg/l 99% -0,41 BD 4,8 0,4 mg/l 99% -0,41 BE 4,4 mg/l 90% -2,76 BF 4,6 0,5 mg/l 94% -1,58 BG 5,21 0,317 mg/l 107% 1,99 BH 4,66 0,17 mg/l 96% -1,23 BI 4,95 mg/l 102% 0,47 BJ 4,71 0,38 mg/l 97% -0,94 BL 4,93 0,30 BM 4,34 BN 4,88 BO 4,85 BK mg/l mg/l 101% 0,35 mg/l 89% -3,11 0,513 mg/l 100% 0,06 0,40 mg/l 100% -0,12 Outliers excl. 4,73 ± 0,09 97,2 ± 1,8 0,23 4,8 50 Unit mg/l % mg/l % BP Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation mg/l All results 4,71 ± 0,16 96,8 ± 3,2 0,44 9,3 56 Sample N131A Parameter Nitrite Target value ± U (k=2) IFA result ± U (k=2) 0,040 mg/l ± 0,001 mg/l 0,040 mg/l ± 0,002 mg/l Stability test ± U (k=2) 0,040 mg/l ± 0,002 mg/l Result [mg/l] Lab Code Result ± Unit Recovery z-Score A 0,039 0,003 mg/l 98% -0,44 0,01 mg/l 103% 0,44 mg/l 100% 0,04 mg/l 113% 2,19 mg/l 101% 0,13 mg/l 103% 0,44 mg/l 100% 0,04 B 0,041 C 0,0401 D 0,045 E 0,0403 F 0,041 G 0,0401 H 0,042 0,003 mg/l 105% 0,88 I 0,039 0,002 mg/l 98% -0,44 J 0,043 mg/l 108% 1,32 K 0,038 mg/l 95% -0,88 L 0,042 mg/l 105% 0,88 M 0,041 mg/l 103% 0,44 mg/l 103% 0,44 mg/l 98% -0,44 mg/l 103% 0,44 mg/l 100% 0,00 * 0,005 0,005 0,0004 N 0,041 O 0,039 P 0,041 Q 0,040 R 0,040 0,010 mg/l 100% 0,00 S 0,041 0,002 mg/l 103% 0,44 T 0,040 0,004 mg/l 100% 0,00 U 0,048 0,013 mg/l 120% 3,51 0,05 * V 0,039 0,010 mg/l 98% -0,44 W 0,040 0,0006 mg/l 100% 0,00 X 0,04 0,006 mg/l 100% 0,00 Y 0,04 0,00 mg/l 100% 0,00 Z 15% 0,0060 30% 0,0120 45% 0,0180 0,058 45% 0,052 30% 0,046 15% 0,040 Target value ± U (k=2) 0,034 - 15% 0,028 - 30% 0,022 - 45% A C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Recovery [%] Deviation 140 Recovery 130 120 mg/l AA 0,041 mg/l 103% 0,44 AB 0,041 0,004 mg/l 103% 0,44 AC 0,039 0,004 mg/l 98% -0,44 AD 0,041 0,004 mg/l 103% 0,44 AE 0,039 0,005 mg/l 98% -0,44 AF 0,0394 0,0009 mg/l 99% -0,26 AG 0,0411 0,0062 mg/l 103% 0,48 AH 0,041 0,003 mg/l 103% 0,44 AI 0,039 0,004 mg/l 98% -0,44 AJ 110 100 FN 90 80 70 mg/l AK 0,039 mg/l 98% -0,44 AL 0,04 mg/l 100% 0,00 AM 0,05 mg/l 125% 4,39 1,32 * AN 0,043 mg/l 108% AO <0,01 0,003 mg/l FN AP 0,04 mg/l 100% 0,00 AQ mg/l AR 0,043 0,0077 mg/l 108% 1,32 AS 0,04 0,08 mg/l 100% 0,00 60 A C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories AT 0,038 AU 0,4745 * mg/l 95% -0,88 0,6170 mg/l 1186% 190,57 0,025 mg/l 108% 1,32 mg/l 100% 0,00 0,002 mg/l 100% 0,00 AV 0,043 AW 0,04 AX 0,04 AY 0,035 * 0,015 mg/l 88% -2,19 AZ 0,050 * 0,012 mg/l 125% 4,39 BA mg/l BB 0,0394 0,0027 mg/l 99% -0,26 BC 0,04 0,01 mg/l 100% 0,00 BD 0,043 0,002 mg/l 108% 1,32 BE 0,042 mg/l 105% 0,88 BF 0,041 0,004 mg/l 103% 0,44 BG 0,073 0,031 mg/l 183% 14,47 BH 0,043 0,003 mg/l 108% 1,32 BI 0,05 mg/l 125% 4,39 BJ 0,0419 mg/l 105% 0,83 mg/l 98% -0,44 mg/l 110% 1,75 mg/l 100% 0,00 * * 0,0042 BK mg/l BL 0,039 BM 0,044 BN 0,040 0,002 0,0040 BO BP mg/l 0,040 Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation 0,003 All results 0,049 ± 0,019 121,9 ± 47,4 0,056 114,1 61 mg/l 100% Outliers excl. 0,041 ± 0,001 101,3 ± 1,3 0,001 3,4 53 0,00 Unit mg/l % mg/l % Sample N131B Parameter Nitrite Target value ± U (k=2) IFA result ± U (k=2) 0,083 mg/l ± 0,001 mg/l 0,083 mg/l ± 0,005 mg/l Stability test ± U (k=2) 0,083 mg/l ± 0,005 mg/l Result [mg/l] Lab Code Result ± Unit Recovery z-Score A 0,083 0,003 mg/l 100% 0,00 0,01 B 0,083 mg/l 100% 0,00 C 0,0811 mg/l 98% -0,40 D 0,088 mg/l 106% 1,06 E 0,0836 mg/l 101% 0,13 F 0,086 mg/l 104% 0,63 G 0,0803 mg/l 97% -0,57 H 0,089 0,005 mg/l 107% 1,27 I 0,082 0,003 mg/l 99% -0,21 J 0,085 mg/l 102% 0,42 K 0,078 mg/l 94% -1,06 L 0,086 mg/l 104% 0,63 M 0,082 mg/l 99% -0,21 mg/l 102% 0,42 mg/l 99% -0,21 mg/l 101% 0,21 mg/l 99% -0,21 0,005 0,005 0,0009 N 0,085 O 0,082 P 0,084 Q 0,082 R 0,084 0,010 mg/l 101% 0,21 S 0,084 0,004 mg/l 101% 0,21 0,05 T 0,083 0,008 mg/l 100% 0,00 U 0,092 0,026 mg/l 111% 1,90 V 0,082 0,010 mg/l 99% -0,21 W 0,083 0,0005 mg/l 100% 0,00 X 0,086 0,013 mg/l 104% 0,63 Y 0,08 0,00 mg/l 96% -0,63 Z 15% 0,0125 30% 0,0249 45% 0,0374 0,120 45% 0,108 30% 0,095 15% 0,083 Target value ± U (k=2) 0,071 - 15% 0,058 - 30% 0,046 - 45% A C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Recovery [%] Deviation 140 Recovery 130 120 mg/l AA 0,084 mg/l 101% 0,21 AB 0,085 0,007 mg/l 102% 0,42 AC 0,079 0,007 mg/l 95% -0,85 AD 0,084 0,08 mg/l 101% 0,21 AE 0,085 0,009 mg/l 102% 0,42 AF 0,0830 0,0009 mg/l 100% 0,00 AG 0,0865 0,0130 mg/l 104% 0,74 AH 0,083 0,0067 mg/l 100% 0,00 AI 0,088 0,009 mg/l 106% 1,06 AJ 110 100 90 80 70 mg/l AK 0,079 mg/l 95% -0,85 AL 0,09 mg/l 108% 1,48 AM 0,10 mg/l 120% 3,59 * AN 0,086 0,003 mg/l 104% 0,63 AO 0,089 0,007 mg/l 107% 1,27 AP 0,08 mg/l 96% -0,63 AQ mg/l AR 0,086 0,010 mg/l 104% 0,63 AS 0,08 0,08 mg/l 96% -0,63 60 A C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories AT 0,080 mg/l 96% -0,63 AU 0,4812 * 0,3958 mg/l 580% 84,17 * 0,019 mg/l 66% -5,92 mg/l 108% 1,48 0,004 mg/l 101% 0,21 0,015 mg/l 82% -3,17 0,023 mg/l 111% 1,90 AV 0,055 AW 0,09 AX 0,084 AY 0,068 AZ 0,092 * BA mg/l BB 0,0790 0,0056 mg/l 95% -0,85 BC 0,08 0,01 mg/l 96% -0,63 BD 0,088 0,002 mg/l 106% 1,06 BE 0,11 mg/l 133% 5,71 BF 0,085 0,008 mg/l 102% 0,42 BG 0,117 0,049 mg/l 141% 7,19 BH 0,090 0,003 mg/l 108% 1,48 BI 0,10 mg/l 120% 3,59 BJ 0,0854 mg/l 103% 0,51 mg/l 98% -0,42 mg/l 106% 1,06 mg/l 101% 0,21 * * * 0,0085 BK mg/l BL 0,081 BM 0,088 BN 0,084 0,004 0,0084 BO BP mg/l 0,082 Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation 0,005 All results 0,091 ± 0,017 110,0 ± 20,7 0,051 55,8 62 mg/l 99% Outliers excl. 0,084 ± 0,001 101,4 ± 1,5 0,003 4,1 55 -0,21 Unit mg/l % mg/l % Sample N131A Parameter Ammonium 15% Target value <0,01 mg/l IFA result <0,01 mg/l Stability test <0,01 mg/l 45% Result ± Unit Recovery A <0,02 0,01 mg/l • 0,01 B <0,025 mg/l • C <0,03 mg/l • D <0,020 mg/l • E <0,03 mg/l • F <0,01 mg/l • G <0,026 mg/l • H <0,030 0,004 mg/l • I <0,03 0,01 mg/l • J 0,002 mg/l • K <0,01 mg/l • L <0,02 mg/l • M <0,03 mg/l • N <0,03 mg/l • O <0,02 mg/l • P <0,02 mg/l • Q 0,010 mg/l • R <0,010 mg/l • S <0,025 mg/l • 0,02 0,007 T <0,009 mg/l • U <0,012 mg/l • V <0,010 mg/l • W <0,010 mg/l • X 0,009 0,001 mg/l • Y 0,01 0,00 mg/l • Z <0,01 mg/l • AA <0,005 mg/l • AB <0,013 mg/l • AC <0,01 mg/l • <0,006 AD <0,02 mg/l • AE <0,008 mg/l • AF <0,0064 mg/l • AG <0,010 mg/l • AH 0,005 mg/l • AI <0,03 mg/l • 0,0005 AJ z-Score 30% 15% 0,01 Target value - 15% - 30% - 45% A C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Recovery [%] Deviation 140 Recovery 130 120 110 FP FP FP FP 100 90 80 70 mg/l AK <0,01 mg/l • AL <0,05 mg/l • AM <0,01 mg/l • mg/l • mg/l • AN <0,01 AO 0,012 AP <0,013 AQ 0,03 AR <0,1 AS 45% Result [mg/l] Lab Code 0,005 30% 0,03 0,005 0,004 mg/l • mg/l FP mg/l • mg/l 60 A C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories AT 0,01 AU 0,0125 0,0461 mg/l mg/l • AV 0,1889 0,004 mg/l FP AW <0,05 mg/l • AX <0,04 mg/l • AY <0,03 mg/l • AZ <0,050 mg/l • 0,08 BA • mg/l BB <0,02 mg/l • BC <0,02 mg/l • BD <0,005 mg/l • BE <0,05 mg/l • BF <0,01 mg/l • BG 0,024 0,002 mg/l FP BH 0,011 0,003 mg/l • BI <0,02 mg/l • BJ <0,013 mg/l • 0,003 0,0019 BK mg/l BL <0,02 mg/l • BM 0,016 mg/l FP BN <0,04 mg/l • BO BP mg/l <0,020 mg/l All results Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation • Outliers excl. Unit mg/l % mg/l % Sample N131B Parameter Ammonium Target value ± U (k=2) IFA result ± U (k=2) 0,050 mg/l ± 0,001 mg/l 0,051 mg/l ± 0,004 mg/l Stability test ± U (k=2) 0,051 mg/l ± 0,004 mg/l Result [mg/l] Lab Code Result ± Unit Recovery z-Score A 0,05 0,01 mg/l 100% 0,00 0,01 B 0,054 mg/l 108% 0,62 C 0,043 mg/l 86% -1,08 D 0,051 mg/l 102% 0,15 E 0,049 mg/l 98% -0,15 F 0,054 mg/l 108% 0,62 G 0,062 mg/l 124% 1,85 H 0,062 0,008 mg/l 124% 1,85 I 0,06 0,01 mg/l 120% 1,54 J 0,054 mg/l 108% 0,62 K 0,055 mg/l 110% 0,77 L 0,048 mg/l 96% -0,31 M 0,05 mg/l 100% 0,00 mg/l 88% -0,92 mg/l 120% 1,54 mg/l 100% 0,00 mg/l 112% 0,92 -0,31 N 0,044 O 0,060 P 0,05 Q 0,056 0,005 0,005 0,0028 0,02 R 0,048 0,010 mg/l 96% S <0,025 0,007 mg/l FN T 0,055 0,005 mg/l 110% 0,77 U 0,059 0,014 mg/l 118% 1,38 V 0,049 0,010 mg/l 98% -0,15 W 0,048 0,0006 mg/l 96% -0,31 X 0,055 0,008 mg/l 110% 0,77 Y 0,04 0,01 mg/l 80% -1,54 0 mg/l 108% 0,62 mg/l 94% -0,46 0,31 Z 0,054 AA 0,047 AB 0,052 0,005 mg/l 104% AC 0,058 0,005 mg/l 116% 1,23 AD 0,041 0,013 mg/l 82% -1,38 AE 0,052 0,008 mg/l 104% 0,31 AF 0,0508 0,0015 mg/l 102% 0,12 AG 0,050 0,008 mg/l 100% 0,00 AH 0,047 0,0047 mg/l 94% -0,46 AI 0,056 0,006 mg/l 112% 0,92 -0,92 AJ 30% 0,0150 45% 0,0225 0,073 45% 0,065 30% 0,058 15% 0,050 Target value ± U (k=2) 0,043 - 15% 0,035 - 30% 0,028 - 45% A C B E D G F I H K J M L O N Q P U S R T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Recovery [%] Deviation 140 Recovery 130 120 110 100 FN 90 80 70 mg/l AK 0,044 mg/l 88% AL <0,05 mg/l • AM 0,05 mg/l 100% 0,00 AN 0,051 0,004 mg/l 102% 0,15 0,059 0,01 mg/l 118% 1,38 mg/l 130% 2,31 mg/l 200% 7,69 mg/l • AP 0,065 AQ 0,10 AR <0,1 * 0,01 mg/l 60 A AO AS 15% 0,0075 C B E D G F I H K J M L O N Q P U S R T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories AT 0,056 AU 0,080 AV 0,038 * mg/l 112% 0 mg/l 160% 0,92 4,62 0,009 mg/l 76% -1,85 AW 0,07 mg/l 140% 3,08 AX 0,0524 0,003 mg/l 105% 0,37 AY 0,057 0,08 mg/l 114% 1,08 AZ 0,060 0,020 mg/l 120% 1,54 -0,46 BA mg/l BB 0,047 0,007 mg/l 94% BC 0,06 0,01 mg/l 120% 1,54 BD 0,047 0,003 mg/l 94% -0,46 BE <0,05 mg/l • BF 0,058 0,006 mg/l 116% 1,23 BG 0,064 0,005 mg/l 128% 2,15 BH 0,056 0,003 mg/l 112% 0,92 BI 0,06 mg/l 120% 1,54 BJ 0,0537 mg/l 107% 0,57 0,0081 BK mg/l BL 0,053 BM 0,027 BN 0,062 0,003 * 0,0062 BO BP mg/l 106% 0,46 mg/l 54% -3,54 mg/l 124% 1,85 mg/l 0,050 Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation 0,008 All results 0,054 ± 0,003 107,9 ± 7,0 0,010 18,7 59 mg/l 100% Outliers excl. 0,053 ± 0,002 106,3 ± 4,7 0,007 12,3 56 0,00 Unit mg/l % mg/l % Sample N131A Parameter Chloride Target value ± U (k=2) IFA result ± U (k=2) 42,1 mg/l ± 0,5 mg/l 41,8 mg/l ± 1,7 mg/l Stability test ± U (k=2) 43,0 mg/l ± 1,7 mg/l Result [mg/l] Lab Code Result ± Unit Recovery z-Score A 41,9 2 mg/l 100% -0,15 B 43,4 mg/l 103% 0,96 D 42,5 mg/l 101% 0,30 mg/l 100% -0,01 E 15% 6,32 48,4 15% 46,3 10% 44,2 5% 42,1 Target value ± U (k=2) 40,0 - 5% 37,9 - 10% 35,8 - 15% mg/l F mg/l 42,08 H 42 1 mg/l 100% -0,07 I 42,4 3 mg/l 101% 0,22 J 43,8 mg/l 104% 1,26 mg/l 100% -0,07 mg/l 98% -0,67 mg/l 100% -0,15 mg/l 98% -0,74 K 42 L 41,2 1 M mg/l N mg/l O mg/l P 41,9 Q 41,1 R 41,1 4,1 mg/l 98% -0,74 S 41,9 2,2 mg/l 100% -0,15 2 T 39,71 4,0 mg/l 94% -1,77 U 41,0 4,1 mg/l 97% -0,82 V 40,92 4,1 mg/l 97% -0,88 W 42,0 0,16 mg/l 100% -0,07 X 38,9 5,8 mg/l 92% -2,38 Y 41,15 0,03 mg/l 98% -0,71 Z A C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Recovery [%] Deviation 140 Recovery 130 120 mg/l AA 41,5 mg/l 99% -0,45 AB 42,6 4 mg/l 101% 0,37 AC 41,0 3,7 mg/l 97% -0,82 AD 41 3,3 mg/l 97% -0,82 AE 42,0 2,1 mg/l 100% -0,07 AF 41,9 0,15 mg/l 100% -0,15 AG 41,1 4,1 mg/l 98% -0,74 AH 39,93 2,396 mg/l 95% -1,61 AI 42,1 1,3 mg/l 100% 0,00 99% -0,22 136% 11,28 AJ AK 10% 4,21 mg/l C G 5% 2,11 110 100 90 80 70 mg/l 41,8 mg/l AL mg/l AM 57,3 AN AO A 0,2 mg/l 39,40 0,46 mg/l 94% -2,00 44,3 0,3 mg/l 105% 1,63 * 60 AP 42 mg/l 100% -0,07 AQ 40,5 5,7 mg/l 96% -1,19 AR 41,2 8,1 mg/l 98% -0,67 AS 39,49 0,2 mg/l 94% -1,94 C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories AT AU AV 45 35,9927 * 36,45 * mg/l 107% 2,15 0,0392 mg/l 85% -4,53 4,38 mg/l 87% -4,19 -1,56 AW mg/l AX 40 2 mg/l 95% AY 42,6 0,25 mg/l 101% 0,37 AZ 41,6 2,0 mg/l 99% -0,37 BB 42,21 5,04 mg/l 100% 0,08 BC 41 2 mg/l 97% -0,82 BD 40,7 0,2 mg/l 97% -1,04 BE 42,29 mg/l 100% 0,14 BF 43,1 mg/l 102% 0,74 mg/l 102% 0,59 mg/l 103% 1,08 mg/l 102% 0,59 BA mg/l 4 BG mg/l BH 42,9 BI 43,55 BJ 42,9 0,4 1,3 BK mg/l BL 42,8 BM 41,5 2,6 mg/l 102% 0,52 mg/l 99% -0,45 BN 44,1 3,97 mg/l 105% 1,48 BO 42,53 0,60 mg/l 101% 0,32 Outliers excl. 41,8 ± 0,5 99,3 ± 1,1 1,3 3,0 51 Unit mg/l % mg/l % BP Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation mg/l All results 41,9 ± 1,0 99,5 ± 2,3 2,7 6,4 54 Sample N131B Parameter Chloride Target value ± U (k=2) IFA result ± U (k=2) 8,02 mg/l ± 0,02 mg/l 7,77 mg/l ± 0,31 mg/l Stability test ± U (k=2) 8,24 mg/l ± 0,66 mg/l Result [mg/l] Lab Code Result ± Unit Recovery z-Score A 7,8 2 mg/l 97% -0,86 B 10% 0,802 15% 1,203 9,22 15% 8,82 10% 8,42 5% 8,02 Target value ± U (k=2) 7,62 - 5% 7,22 - 10% 6,82 - 15% mg/l C 9,1 D 7,8 * E mg/l 113% 4,21 mg/l 97% -0,86 mg/l 107% 2,18 mg/l F mg/l G 8,58 H 8,0 0,2 mg/l 100% -0,08 I 7,9 1 mg/l 99% -0,47 J 9,6 mg/l 120% 6,16 mg/l 100% -0,08 mg/l 102% 0,70 mg/l 100% -0,08 mg/l 99% -0,47 mg/l 104% 1,21 K 8,0 L 8,2 M 8 * 0,5 N mg/l O mg/l P 7,9 Q 8,33 2 R 7,8 0,8 mg/l 97% -0,86 S 7,78 0,41 mg/l 97% -0,94 T 7,63 0,8 mg/l 95% -1,52 U 7,9 0,8 mg/l 99% -0,47 V 7,83 0,8 mg/l 98% -0,74 W 7,66 0,05 mg/l 96% -1,40 X 7,70 1,2 mg/l 96% -1,25 Y 8,69 0,10 mg/l 108% 2,61 Z A C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Recovery [%] Deviation 140 Recovery 130 120 mg/l AA 7,63 mg/l 95% -1,52 AB 8,50 0,7 mg/l 106% 1,87 AC 7,62 0,69 mg/l 95% -1,56 AD 8 0,6 mg/l 100% -0,08 AE 8,47 0,51 mg/l 106% 1,75 AF 7,93 0,03 mg/l 99% -0,35 AG 8,05 0,81 mg/l 100% 0,12 AH 7,74 0,31 mg/l 97% -1,09 AI 8,1 0,2 mg/l 101% 0,31 100% -0,08 mg/l 152% 16,29 AJ AK 5% 0,401 110 100 FN 90 80 70 mg/l 8,0 mg/l AL mg/l AM 12,2 * A AN 7,72 0,18 mg/l 96% -1,17 AO 7,9 0,1 mg/l 99% -0,47 AP 7,35 AQ 7,8 AR 6,6 AS 8,19 * 60 mg/l 92% -2,61 1,1 mg/l 97% -0,86 1,3 mg/l 82% -5,53 0,2 mg/l 102% 0,66 C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories AT AU AV <5 10,7991 * 6,59 * mg/l FN 0,0932 mg/l 135% 10,83 0,019 mg/l 82% -5,57 0,31 AW mg/l AX 8,1 0,5 mg/l 101% AY 8,1 0,25 mg/l 101% 0,31 AZ 7,1 0,7 mg/l 89% -3,58 BB 7,96 0,95 mg/l 99% -0,23 BC 8,1 1 mg/l 101% 0,31 BD 7,7 0,2 mg/l 96% -1,25 BE 8,15 mg/l 102% 0,51 BF 7,3 0,7 mg/l 91% -2,81 BH 8,15 0,27 mg/l 102% 0,51 BI 8,8 mg/l 110% 3,04 BJ 8,50 mg/l 106% 1,87 BA mg/l BG mg/l 0,26 BK mg/l BL 8,31 BM 7,80 BN 8,28 BO 7,63 0,50 mg/l 104% 1,13 mg/l 97% -0,86 0,746 mg/l 103% 1,01 0,60 mg/l 95% -1,52 BP Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation mg/l All results 8,10 ± 0,31 101,0 ± 3,9 0,85 10,5 54 Outliers excl. 7,97 ± 0,13 99,4 ± 1,7 0,35 4,3 48 Unit mg/l % mg/l % Sample N131A Parameter Sulphate Target value ± U (k=2) IFA result ± U (k=2) 39,4 mg/l ± 0,5 mg/l 39,8 mg/l ± 1,6 mg/l Stability test ± U (k=2) 39,7 mg/l ± 1,6 mg/l Lab Code Result ± Unit A mg/l B mg/l C mg/l D mg/l E mg/l F Recovery Result [mg/l] 39,33 H 39 2 mg/l 100% -0,06 mg/l 99% -0,32 I mg/l J mg/l K mg/l L mg/l M mg/l N mg/l O mg/l P mg/l Q 38,3 R 38,8 S 38,5 97% -0,87 3,9 mg/l 98% -0,48 1,7 mg/l 98% -0,71 T 37,15 3,7 mg/l 94% -1,78 U 39,3 3,9 mg/l 100% -0,08 V 38,8 3,9 mg/l 98% -0,48 W 38,7 0,04 mg/l 98% -0,56 X 36,60 5,5 mg/l 93% -2,22 Y 41,47 0,04 mg/l 105% 1,64 15% 43,3 10% 41,4 5% 39,4 Target value ± U (k=2) 37,4 - 5% 35,5 - 10% 33,5 - 15% C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Recovery [%] Deviation 140 Recovery 130 120 mg/l AA 110 mg/l AB 39,3 3 mg/l 100% -0,08 AC 38,3 3,4 mg/l 97% -0,87 AD 37 2,2 mg/l 94% -1,90 AE 38,8 2,0 mg/l 98% -0,48 AF 39,3 0,33 mg/l 100% -0,08 AG 38,9 3,9 mg/l 99% -0,40 AH 37,03 1,481 mg/l 94% -1,88 AI 39,7 1,2 mg/l 101% 0,24 99% -0,32 AJ AK 15% 5,91 45,3 A mg/l Z 10% 3,94 z-Score mg/l G 5% 1,97 100 90 80 70 mg/l 39,0 mg/l AL mg/l AM mg/l 60 A C B AN 38,72 0,44 mg/l 98% -0,54 AO 41,1 0,4 mg/l 104% 1,35 AP 39,5 mg/l 100% 0,08 AQ 38,0 5,3 mg/l 96% -1,11 AR 38,3 7,7 mg/l 97% -0,87 AS 40,65 0,8 mg/l 103% 0,99 E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories AT AU AV 40 34,1436 * 35,61 * mg/l 102% 0,48 0,0213 mg/l 87% -4,17 0,842 mg/l 90% -3,01 -0,32 AW mg/l AX 39 2 mg/l 99% AY 39,8 3,0 mg/l 101% 0,32 AZ 39,0 2,0 mg/l 99% -0,32 BB 40,57 4,04 mg/l 103% 0,93 BC 40 3 mg/l 102% 0,48 BD 37 2 mg/l 94% -1,90 BE 32,72 mg/l 83% -5,30 BF 38,9 mg/l 99% -0,40 mg/l 102% 0,56 mg/l 108% 2,43 mg/l 97% -0,79 mg/l 102% 0,63 mg/l 100% 0,00 BA mg/l * 4 BG mg/l BH 40,1 BI 42,46 1,1 BJ 38,4 5,8 BL 40,2 2,4 BM 39,4 BN 40,6 3,65 mg/l 103% 0,95 BO 39,07 0,70 mg/l 99% -0,26 * BK mg/l BP Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation mg/l All results 38,8 ± 0,7 98,4 ± 1,8 1,8 4,5 44 Outliers excl. 39,0 ± 0,5 99,1 ± 1,2 1,1 2,9 40 Unit mg/l % mg/l % Sample N131B Parameter Sulphate Target value ± U (k=2) IFA result ± U (k=2) 22,8 mg/l ± 0,3 mg/l 23,1 mg/l ± 0,9 mg/l Stability test ± U (k=2) 22,9 mg/l ± 0,9 mg/l Lab Code Result ± Unit A mg/l B mg/l C mg/l D mg/l E mg/l F Recovery Result [mg/l] 23,01 H 22 1 mg/l 101% 0,29 mg/l 96% -1,10 I mg/l J mg/l K mg/l L mg/l M mg/l N mg/l O mg/l P mg/l Q 21,5 R 22,1 S 22,2 94% -1,78 2,2 mg/l 97% -0,96 0,95 mg/l 97% -0,82 T 21,99 2,2 mg/l 96% -1,11 U 22,6 2,3 mg/l 99% -0,27 V 22,1 2,2 mg/l 97% -0,96 W 22,0 0,05 mg/l 96% -1,10 X 21,8 3,3 mg/l 96% -1,37 Y 24,57 0,13 mg/l 108% 2,43 15% 25,1 10% 23,9 5% 22,8 Target value ± U (k=2) 21,7 - 5% 20,5 - 10% 19,4 - 15% C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Recovery [%] Deviation 140 Recovery 130 120 mg/l AA 110 mg/l AB 23,0 AC 22,1 AD 20 * 2 mg/l 101% 0,27 2 mg/l 97% -0,96 1,2 mg/l 88% -3,84 AE 22,1 1,2 mg/l 97% -0,96 AF 22,8 0,34 mg/l 100% 0,00 AG 22,3 2,2 mg/l 98% -0,69 AH 24,82 1,489 mg/l 109% 2,77 AI 22,9 0,7 mg/l 100% 0,14 99% -0,41 AJ AK 15% 3,42 26,2 A mg/l Z 10% 2,28 z-Score mg/l G 5% 1,14 100 90 80 70 mg/l 22,5 mg/l AL mg/l AM mg/l A C B AN 22,44 0,26 mg/l 98% -0,49 AO 23,9 0,2 mg/l 105% 1,51 AP 19 mg/l 83% -5,21 AQ 22,5 3,1 mg/l 99% -0,41 AR 21,5 4,3 mg/l 94% -1,78 AS 23,77 0,8 mg/l 104% 1,33 * 60 E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories AT 23 AU 23,1698 AV 19,87 * mg/l 101% 0,0141 mg/l 102% 0,51 0,842 mg/l 87% -4,02 -1,10 AW 0,27 mg/l AX 22,0 1,2 mg/l 96% AY 23,0 3,0 mg/l 101% 0,27 AZ 22,4 2,0 mg/l 98% -0,55 BB 23,68 2,33 mg/l 104% 1,21 BC 24 2 mg/l 105% 1,64 BD 33 * 2 mg/l 145% 13,98 BE 17,93 * mg/l 79% -6,67 BF 22,1 mg/l 97% -0,96 mg/l 99% -0,41 mg/l 117% 5,18 mg/l 98% -0,55 BA mg/l 2 BG mg/l BH 22,5 BI 26,58 1,1 BJ 22,4 3,4 BL 23,3 1,4 BM 21,9 * BK mg/l mg/l 102% 0,69 mg/l 96% -1,23 BN 23,1 2,08 mg/l 101% 0,41 BO 23,21 0,70 mg/l 102% 0,56 Outliers excl. 22,7 ± 0,4 99,5 ± 1,5 0,8 3,5 38 Unit mg/l % mg/l % BP Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation mg/l All results 22,7 ± 0,9 99,5 ± 3,8 2,1 9,4 44 Sample N131A Parameter Orthophosphate Target value ± U (k=2) IFA result ± U (k=2) 0,090 mg/l ± 0,001 mg/l 0,090 mg/l ± 0,013 mg/l Stability test ± U (k=2) 0,090 mg/l ± 0,013 mg/l Result [mg/l] Lab Code Result ± Unit Recovery z-Score A 0,088 0,003 mg/l 98% -0,20 0,01 -0,10 B 0,089 mg/l 99% C 0,0954 mg/l 106% 0,55 D 0,087 mg/l 97% -0,30 E 0,0907 mg/l 101% 0,07 F 0,087 mg/l 97% -0,30 G 0,0837 mg/l 93% -0,64 H 0,089 0,009 mg/l 99% -0,10 I 0,096 0,003 mg/l 107% 0,61 J 0,108 mg/l 120% 1,82 mg/l 102% 0,20 mg/l 100% 0,00 mg/l 102% 0,20 mg/l 109% 0,81 mg/l 100% 0,00 mg/l 101% 0,10 mg/l 84% -1,41 0,40 K 0,092 L 0,090 M 0,092 N 0,098 O 0,090 P 0,091 Q 0,076 0,005 * 0,005 0,002 0,01 R mg/l S 0,094 0,005 mg/l 104% T 0,098 0,009 mg/l 109% 0,81 U 0,089 0,015 mg/l 99% -0,10 V 0,089 0,009 mg/l 99% -0,10 W 0,088 0,0002 mg/l 98% -0,20 X 0,095 0,014 mg/l 106% 0,51 Y 0,07 0,01 mg/l 78% -2,02 * Z 0,082 mg/l 91% -0,81 AA 0,086 mg/l 96% -0,40 AB 0,085 0,012 mg/l 94% -0,51 AC 0,095 0,009 mg/l 106% 0,51 AD 0,089 0,013 mg/l 99% -0,10 AE 0,091 0,009 mg/l 101% 0,10 AF 0,0864 0,0020 mg/l 96% -0,36 AG 0,089 AH 0,84 AI 0,089 * 0,013 mg/l 99% -0,10 0,0101 mg/l 933% 75,76 0,009 mg/l 99% -0,10 109% 0,81 AJ AK 30% 0,0270 45% 0,0405 0,131 45% 0,117 30% 0,104 15% 0,090 Target value ± U (k=2) 0,077 - 15% 0,063 - 30% 0,050 - 45% A C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Recovery [%] Deviation 140 Recovery 130 120 110 100 FN 90 FN 80 70 mg/l 0,098 mg/l AL mg/l AM 0,81 AN 0,086 * mg/l 900% 72,73 0,002 mg/l 96% -0,40 mg/l <0,2 mg/l AQ • mg/l AR <0,6 AS 0,076 0,002 60 A 0,05 AO AP 15% 0,0135 mg/l • mg/l 84% -1,41 C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories AT 0,09 AU 0 0 AV mg/l 100% mg/l FN mg/l AW 0,10 AX 0,08 0,003 mg/l 111% 1,01 mg/l 89% -1,01 97% -0,30 102% 0,20 -0,30 AY mg/l AZ mg/l BA BB mg/l 0,087 0,013 BC BD 0,00 mg/l mg/l 0,092 0,002 BE mg/l mg/l BF 0,087 0,009 mg/l 97% BG 0,095 0,010 mg/l 106% 0,51 BH 0,086 0,002 mg/l 96% -0,40 BI <0,02 BJ 0,0919 0,0046 BK mg/l FN mg/l 102% 0,19 mg/l 100% 0,00 mg/l 126% 2,32 mg/l BL 0,090 BM 0,113 0,006 * BN mg/l BO mg/l BP Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation mg/l All results 0,120 ± 0,056 133,3 ± 62,6 0,147 122,6 49 Outliers excl. 0,090 ± 0,002 99,5 ± 2,4 0,005 5,9 44 Unit mg/l % mg/l % Sample N131B Parameter Orthophosphate Target value ± U (k=2) IFA result ± U (k=2) 0,071 mg/l ± 0,001 mg/l 0,072 mg/l ± 0,010 mg/l Stability test ± U (k=2) 0,073 mg/l ± 0,010 mg/l Result [mg/l] Lab Code Result ± Unit Recovery z-Score A 0,072 0,003 mg/l 101% 0,13 0,01 B 0,070 mg/l 99% -0,13 C 0,0745 mg/l 105% 0,45 D 0,073 mg/l 103% 0,26 E 0,0720 mg/l 101% 0,13 F 0,072 mg/l 101% 0,13 G 0,0690 mg/l 97% -0,26 H 0,070 0,007 mg/l 99% -0,13 I 0,080 0,003 mg/l 113% 1,15 J 0,082 mg/l 115% 1,41 K 0,073 mg/l 103% 0,26 L 0,071 mg/l 100% 0,00 M 0,070 mg/l 99% -0,13 mg/l 107% 0,64 mg/l 99% -0,13 mg/l 99% -0,13 mg/l 86% -1,28 N 0,076 O 0,070 P 0,070 Q 0,061 0,005 0,005 0,001 0,01 R mg/l S 0,076 0,004 mg/l 107% 0,64 T 0,080 0,008 mg/l 113% 1,15 U 0,072 0,012 mg/l 101% 0,13 V 0,074 0,007 mg/l 104% 0,38 W 0,0687 0,0005 mg/l 97% -0,29 X 0,077 0,012 mg/l 108% 0,77 Y 0,06 0,01 mg/l 85% -1,41 0,024 mg/l 93% -0,64 mg/l 99% -0,13 -0,26 * Z 0,066 AA 0,070 AB 0,069 0,01 mg/l 97% AC 0,076 0,007 mg/l 107% 0,64 AD 0,067 0,010 mg/l 94% -0,51 AE 0,071 0,007 mg/l 100% 0,00 AF 0,0760 0,0020 mg/l 107% 0,64 AG 0,070 0,011 mg/l 99% -0,13 AH 0,075 0,009 mg/l 106% 0,51 AI mg/l AJ mg/l AK mg/l AL mg/l AM mg/l AN mg/l AO mg/l AP mg/l AQ mg/l AR mg/l AS mg/l 15% 0,0107 30% 0,0213 45% 0,0320 0,103 45% 0,092 30% 0,082 15% 0,071 Target value ± U (k=2) 0,060 - 15% 0,050 - 30% 0,039 - 45% A C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Recovery [%] Deviation 140 Recovery 130 120 110 100 90 80 70 60 A C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories AT mg/l AU mg/l AV mg/l AW mg/l AX mg/l AY mg/l AZ mg/l BA mg/l BB mg/l BC mg/l BD mg/l BE mg/l BF mg/l BG mg/l BH mg/l BI mg/l BJ mg/l BK mg/l BL mg/l BM mg/l BN mg/l BO mg/l BP Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation mg/l All results 0,072 ± 0,002 101,3 ± 3,2 0,005 6,6 33 Outliers excl. 0,072 ± 0,002 101,8 ± 3,0 0,004 6,0 32 Unit mg/l % mg/l % Sample N131B Parameter Orthophosphate_1 Target value ± U (k=2) IFA result ± U (k=2) 0,082 mg/l ± 0,002 mg/l 0,085 mg/l ± 0,012 mg/l Stability test ± U (k=2) 0,085 mg/l ± 0,012 mg/l Lab Code Result ± Unit A mg/l B mg/l C mg/l D mg/l E mg/l F mg/l G mg/l H mg/l I mg/l J mg/l K mg/l L mg/l M mg/l N mg/l O mg/l P mg/l Q mg/l R mg/l S mg/l T mg/l U mg/l V mg/l W mg/l X mg/l Y mg/l Z mg/l AA mg/l AB mg/l AC mg/l AD mg/l AE mg/l AF mg/l AG mg/l AH mg/l AI 0,087 0,009 AJ AK Result [mg/l] 30% 0,0246 45% 0,0369 0,119 45% 0,107 30% 0,094 15% 0,082 Target value ± U (k=2) 0,070 - 15% 0,057 - 30% 0,045 - 45% z-Score A C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Recovery [%] Deviation 140 Recovery 130 120 110 100 90 80 106% 0,55 123% 2,11 mg/l 732% 57,43 mg/l 99% -0,11 70 mg/l 0,101 mg/l AL mg/l AM 0,60 AN 0,081 * 0,003 AO AP mg/l Recovery 15% 0,0123 A mg/l <0,2 mg/l AQ • mg/l AR <0,6 AS 0,071 0,002 60 mg/l • mg/l 87% -1,22 C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories AT 0,06 AU 0 mg/l 0 AV 0,10 AX 0,078 0,003 mg/l 122% 2,00 mg/l 95% -0,44 102% 0,22 105% 0,44 AY mg/l AZ mg/l BA mg/l 0,084 0,012 BC BD -2,44 mg/l AW BB 73% mg/l mg/l mg/l 0,086 0,002 BE mg/l mg/l BF 0,085 0,009 mg/l 104% 0,33 BG 0,091 0,010 mg/l 111% 1,00 BH 0,082 0,001 mg/l 100% 0,00 BI 0,09 mg/l 110% 0,89 BJ 0,0889 mg/l 108% 0,76 mg/l 115% 1,33 mg/l 132% 2,88 0,0044 BK mg/l BL 0,094 BM 0,108 0,007 BN mg/l BO mg/l BP Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation mg/l All results 0,117 ± 0,089 142,5 ± 108,0 0,125 107,0 17 Outliers excl. 0,087 ± 0,009 105,7 ± 10,4 0,012 13,4 16 Unit mg/l % mg/l % Sample N131A Parameter Boron 15% Target value <0,02 mg/l IFA result <0,02 mg/l Stability test <0,02 mg/l Lab Code Result ± Unit A mg/l B mg/l C D mg/l mg/l F mg/l G mg/l <0,002 0,001 mg/l I mg/l J mg/l K mg/l L mg/l M mg/l N mg/l O mg/l P mg/l Q mg/l R mg/l S mg/l T mg/l U mg/l Result [mg/l] 45% Recovery V 15% • 0,02 - 15% - 30% - 45% A X <0,02 mg/l • Z mg/l mg/l AB mg/l <0,01 AD mg/l G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Deviation 140 • AA E D Recovery [%] mg/l mg/l C B mg/l Y Target value • <0,010 Recovery 130 120 110 FP • 100 90 mg/l AE <0,004 mg/l • AF [0,002] mg/l • AG <0,020 mg/l • AH [0,00114] mg/l • AI <0,050 mg/l • AJ <0,005 mg/l • AK mg/l AL mg/l AM mg/l AN mg/l AO mg/l AP z-Score 30% W AC 45% mg/l <0,05 E H 30% <0,1 mg/l AQ mg/l AR mg/l AS mg/l 80 70 60 A C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories • AT AU mg/l 0 0 AV mg/l 0,0565 0,0017 AY AZ • mg/l AW AX mg/l mg/l FP mg/l <0,010 mg/l BA • mg/l BB <0,010 mg/l • BC <0,05 mg/l • BD mg/l BE <0,01 mg/l • BF <0,005 mg/l • BG BH mg/l [0,002] mg/l BI mg/l BJ mg/l BK mg/l BL • mg/l BM <0,01 mg/l • BN <0,020 mg/l • BO mg/l BP mg/l All results Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation Outliers excl. Unit mg/l % mg/l % Sample N131B Parameter Boron Target value ± U (k=2) IFA result ± U (k=2) 0,071 mg/l ± 0,001 mg/l 0,073 mg/l ± 0,007 mg/l Stability test ± U (k=2) 0,071 mg/l ± 0,007 mg/l Lab Code Result ± Unit A mg/l B mg/l C D Result [mg/l] mg/l * mg/l F mg/l G mg/l 0,072 0,01 mg/l I mg/l J mg/l K mg/l L mg/l M mg/l N mg/l O mg/l P mg/l Q mg/l R mg/l S mg/l T mg/l U mg/l V 137% 101% 0,14 X 0,063 0,009 mg/l 89% -1,13 mg/l mg/l AC 0,072 0,01 AD mg/l 0,082 15% 0,071 Target value ± U (k=2) 0,060 - 15% 0,050 - 30% 0,039 - 45% C E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Deviation 140 101% AB 30% Recovery [%] mg/l mg/l 0,092 B mg/l Z 45% A 0,001 AA 0,103 0,14 0,072 mg/l 45% 0,0320 3,66 W Y 30% 0,0213 z-Score mg/l 0,097 E H Recovery 15% 0,0107 Recovery 130 120 110 101% 0,14 100 90 mg/l AE 0,074 0,008 mg/l 104% 0,42 AF 0,068 0,002 mg/l 96% -0,42 AG 0,069 0,010 mg/l 97% -0,28 AH 0,084 0,0101 mg/l 118% 1,83 AI mg/l AJ mg/l AK mg/l AL mg/l AM mg/l AN mg/l AO mg/l AP mg/l AQ mg/l AR mg/l AS mg/l 80 70 60 A C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories AT mg/l AU mg/l AV mg/l AW mg/l AX mg/l AY mg/l AZ mg/l BA mg/l BB mg/l BC mg/l BD mg/l BE mg/l BF mg/l BG mg/l BH mg/l BI mg/l BJ mg/l BK mg/l BL mg/l BM mg/l BN mg/l BO mg/l BP Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation mg/l All results 0,075 ± 0,011 105,0 ± 16,0 0,010 13,6 9 Outliers excl. 0,072 ± 0,007 101,1 ± 10,5 0,006 8,4 8 Unit mg/l % mg/l % Sample N131B Parameter Boron_1 Target value ± U (k=2) IFA result ± U (k=2) 0,058 mg/l ± 0,001 mg/l 0,059 mg/l ± 0,006 mg/l Stability test ± U (k=2) 0,057 mg/l ± 0,006 mg/l Lab Code Result ± Unit A mg/l B mg/l C mg/l D mg/l E mg/l F mg/l G mg/l H mg/l I mg/l J mg/l K mg/l L mg/l M mg/l N mg/l O mg/l P mg/l Q mg/l R mg/l S mg/l T mg/l U mg/l V mg/l W mg/l X mg/l Y mg/l Z mg/l AA mg/l AB mg/l AC mg/l AD mg/l AE mg/l AF mg/l AG mg/l AH mg/l Recovery Result [mg/l] 0,34 AP 58,7 * 5,1 mg/l mg/l AR mg/l AS mg/l - 15% 0,041 - 30% 0,032 - 45% C E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Deviation Recovery FN 80 0,17 AQ 0,049 90 103% mg/l Target value ± U (k=2) 100 102% mg/l 0,058 110 mg/l AN 15% 120 mg/l AO 0,067 130 0,002 mg/l 30% 140 0,006 AM 0,075 Recovery [%] 0,060 mg/l 45% B 0,059 mg/l 45% 0,0261 0,084 A AI AL 30% 0,0174 z-Score AJ AK 15% 0,0087 70 60 A C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories 101207% 10110,69 AT AU mg/l 0,0575 0,0695 AV mg/l FN mg/l 0,057 0,002 BA mg/l 98% -0,17 mg/l BB 0,054 BC 0,07 * 0,011 mg/l 93% -0,69 0,01 mg/l 121% 2,07 mg/l 105% 0,52 mg/l 102% 0,17 103% 0,34 mg/l 91% -0,86 mg/l 105% 0,52 BD mg/l BE 0,061 BF 0,059 0,006 BG BH -0,09 mg/l <0,001 AY AZ 99% mg/l AW AX mg/l mg/l 0,060 0,002 mg/l BI mg/l BJ mg/l BK mg/l BL mg/l BM 0,053 BN 0,061 0,0085 BO mg/l BP Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation mg/l All results 4,946 ± 15,198 8527,5 ± 26203, 16,928 342,3 12 Outliers excl. 0,058 ± 0,003 100,3 ± 5,0 0,003 4,8 10 Unit mg/l % mg/l % Sample N131A Parameter DOC Target value ± U (k=2) IFA result ± U (k=2) 4,06 mg/l ± 0,05 mg/l 4,09 mg/l ± 0,41 mg/l Stability test ± U (k=2) 3,98 mg/l ± 0,40 mg/l Lab Code Result ± A mg/l 4,22 mg/l mg/l G mg/l 4,0 0,2 mg/l I mg/l J mg/l K mg/l L mg/l M mg/l N mg/l O mg/l P mg/l Q 3,99 mg/l R mg/l S mg/l 109% 1,43 104% 0,64 99% 5,28 30% 4,67 15% 4,06 Target value ± U (k=2) 3,45 - 15% 2,84 - 30% 2,23 - 45% A 98% E D G F I H K J M L O N Q P S R U T W V Y X Z 0,39 mg/l 96% -0,60 0,45 mg/l 111% 1,83 V 4,006 0,40 mg/l 99% -0,21 W 4,19 0,16 mg/l 103% 0,52 X 4,40 0,66 mg/l 108% 1,35 Y 4,51 0,04 mg/l 111% 1,79 AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Recovery [%] 4,52 Z C B -0,28 3,91 Deviation 140 Recovery 130 120 mg/l AA 110 mg/l AB 4,16 0,7 mg/l 102% 0,40 AC 4,28 0,39 mg/l 105% 0,87 AD 4,26 0,68 mg/l 105% 0,79 AE 4,13 0,37 mg/l 102% 0,28 AF 4,22 0,01 mg/l 104% 0,64 AG 4,03 0,40 mg/l 99% -0,12 AH 4,3 0,34 mg/l 106% 0,95 AI 4,07 0,41 mg/l 100% 0,04 101% 0,16 AJ 100 90 80 70 mg/l 4,1 mg/l AL mg/l AM mg/l 3,91 0,12 mg/l 96% -0,60 4,75 0,42 mg/l 117% 2,74 101% 0,16 AP mg/l mg/l 4,1 1,2 mg/l mg/l C B AN AQ 60 A AO AS 45% -0,24 T AR 5,89 z-Score U AK 45% 1,827 mg/l F H 30% 1,218 mg/l 4,42 D E Recovery Result [mg/l] mg/l B C Unit 15% 0,609 E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories AT AU mg/l 5,5243 * 0,0918 AV mg/l 136% 5,82 mg/l AW mg/l AX 4,25 0,1 mg/l 105% 0,75 AY 4,48 0,03 mg/l 110% 1,67 AZ 4,13 0,50 mg/l 102% 0,28 BA mg/l BB 3,89 0,27 mg/l 96% -0,68 BC 4,1 0,5 mg/l 101% 0,16 BD 4,2 0,2 mg/l 103% 0,56 103% 0,56 mg/l 137% 6,04 mg/l 114% 2,18 BE BF mg/l 4,2 0,4 BG mg/l mg/l BH mg/l BI 5,58 BJ 4,61 * 0,92 BK mg/l BL 4,13 BM 9,71 BN 4,13 0,17 * 0,248 BO 102% 0,28 mg/l 239% 22,45 mg/l 102% 0,28 Outliers excl. 4,21 ± 0,10 103,6 ± 2,5 0,21 4,9 32 Unit mg/l % mg/l % mg/l BP Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation mg/l mg/l All results 4,44 ± 0,46 109,4 ± 11,3 0,99 22,3 35 Sample N131B Parameter DOC Target value ± U (k=2) IFA result ± U (k=2) 2,63 mg/l ± 0,04 mg/l 2,62 mg/l ± 0,26 mg/l Stability test ± U (k=2) 2,58 mg/l ± 0,26 mg/l Lab Code Result ± A mg/l 2,84 mg/l mg/l G mg/l 2,7 0,2 mg/l I mg/l J mg/l K mg/l L mg/l M mg/l N mg/l O mg/l P mg/l Q 2,31 mg/l R mg/l S mg/l 116% 2,58 108% 1,29 103% 3,42 30% 3,02 15% 2,63 Target value ± U (k=2) 2,24 - 15% 1,84 - 30% 1,45 - 45% A 88% E D G F I H K J M L O N Q P S R U T W V Y X Z 0,26 mg/l 98% -0,31 0,30 mg/l 115% 2,45 V 2,719 0,27 mg/l 103% 0,55 W 2,68 0,07 mg/l 102% 0,31 X 2,50 0,38 mg/l 95% -0,80 Y 3,12 0,02 mg/l 119% 3,01 AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Recovery [%] 3,03 Z C B -1,96 2,58 Deviation 140 Recovery 130 120 mg/l AA 110 mg/l AB 2,74 0,5 mg/l 104% 0,67 AC 2,84 0,26 mg/l 108% 1,29 AD 2,76 0,44 mg/l 105% 0,80 AE 2,70 0,25 mg/l 103% 0,43 AF 2,85 0,01 mg/l 108% 1,35 AG 2,57 0,26 mg/l 98% -0,37 AH 2,9 0,23 mg/l 110% 1,66 AI 2,86 0,29 mg/l 109% 1,41 103% 0,43 AJ 100 90 80 70 mg/l 2,7 mg/l AL mg/l AM mg/l AN 2,61 AO 3,25 * mg/l 99% -0,12 mg/l 124% 3,80 106% 1,04 mg/l mg/l 2,8 0,9 mg/l mg/l C B 0,29 AP 60 A 0,14 AQ AS 45% 0,43 T AR 3,81 z-Score U AK 45% 1,184 mg/l F H 30% 0,789 mg/l 3,05 D E Recovery Result [mg/l] mg/l B C Unit 15% 0,395 E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories AT AU mg/l 4,701 * 0,2198 AV mg/l 179% 12,70 mg/l AW mg/l AX 2,85 0,07 mg/l 108% 1,35 AY 2,73 0,03 mg/l 104% 0,61 AZ 2,65 0,50 mg/l 101% 0,12 BA mg/l BB 2,51 0,18 mg/l 95% -0,74 BC 2,7 0,3 mg/l 103% 0,43 BD 2,8 0,2 mg/l 106% 1,04 104% 0,67 mg/l 125% 3,99 mg/l 117% 2,76 BE BF mg/l 2,74 0,3 BG mg/l mg/l BH mg/l BI 3,28 BJ 3,08 * 0,62 BK mg/l BL 2,75 BM 5,62 BN 2,65 0,11 * 0,159 BO 105% 0,74 mg/l 214% 18,34 mg/l 101% 0,12 Outliers excl. 2,75 ± 0,09 104,6 ± 3,3 0,18 6,4 31 Unit mg/l % mg/l % mg/l BP Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation mg/l mg/l All results 2,92 ± 0,28 111,0 ± 10,6 0,61 20,8 35 Sample N131A Parameter Total P (as PO4) Target value ± U (k=2) IFA result ± U (k=2) 0,148 mg/l ± 0,002 mg/l 0,159 mg/l ± 0,022 mg/l Stability test ± U (k=2) 0,168 mg/l ± 0,024 mg/l Result [mg/l] Lab Code Result ± Unit Recovery z-Score A 0,150 0,003 mg/l 101% 0,10 0,01 B 0,147 mg/l 99% -0,05 C 0,141 mg/l 95% -0,36 D 0,139 mg/l 94% -0,47 E 0,146 mg/l 99% -0,10 mg/l 94% -0,44 F G mg/l 0,1396 H 0,15 0,01 mg/l 101% 0,10 I 0,142 0,005 mg/l 96% -0,31 J 0,153 mg/l 103% 0,26 K 0,146 mg/l 99% -0,10 L 0,147 mg/l 99% -0,05 M 0,138 mg/l 93% -0,52 mg/l 114% 1,04 mg/l 103% 0,26 mg/l 100% 0,00 mg/l 97% -0,21 N 0,168 O 0,153 P 0,148 Q 0,144 0,005 0,003 0,01 R mg/l S mg/l T 0,156 0,015 mg/l 105% 0,42 0,135 0,016 mg/l 91% -0,68 V 0,141 0,014 mg/l 95% -0,36 W 0,139 0,003 mg/l 94% -0,47 X 0,137 0,021 mg/l 93% -0,57 Y 0,13 0,00 mg/l 88% -0,94 0,004 mg/l 74% -2,03 mg/l 97% -0,26 -0,10 Z 0,109 AA 0,143 AB 0,146 0,02 mg/l 99% AC 0,158 0,006 mg/l 107% 0,52 AD 0,147 0,019 mg/l 99% -0,05 AE 0,150 0,015 mg/l 101% 0,10 AF 0,1480 0,0019 mg/l 100% 0,00 AG 0,146 0,029 mg/l 99% -0,10 AH 0,15 0,0223 mg/l 101% 0,10 AI 0,175 0,018 mg/l 118% 1,40 97% -0,21 mg/l 561% 35,45 mg/l 94% -0,47 AJ AK 30% 0,0444 45% 0,0666 0,215 45% 0,192 30% 0,170 15% 0,148 Target value ± U (k=2) 0,126 - 15% 0,104 - 30% 0,081 - 45% A C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Recovery [%] U * 15% 0,0222 Deviation 140 Recovery 130 120 110 100 90 80 70 mg/l 0,144 mg/l AL mg/l AM 0,83 AN 0,139 * 0,006 AO A mg/l AP 0,23 * AQ 0,05 * AR <0,15 AS 0,146 0,02 0,002 60 mg/l 155% 4,26 mg/l 34% -5,09 mg/l • mg/l 99% -0,10 C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories AT 0,17 AU 0,1656 0,1839 AV 115% 1,14 mg/l 112% 0,91 99% -0,10 mg/l AW AX mg/l mg/l 0,146 0,005 mg/l AY mg/l AZ mg/l BA mg/l BB mg/l BC 0,16 0,02 mg/l 108% 0,62 BD 0,151 0,005 mg/l 102% 0,16 1,14 BE mg/l BF 0,17 0,02 mg/l 115% BG 0,161 0,014 mg/l 109% 0,68 BH 0,122 0,002 mg/l 82% -1,35 0,153 0,038 103% 0,26 mg/l 99% -0,10 mg/l 82% -1,40 mg/l 74% -1,98 BI BJ mg/l BK mg/l mg/l BL 0,146 BM 0,121 BN 0,110 0,010 * 0,0110 BO mg/l BP Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation mg/l All results 0,160 ± 0,038 107,8 ± 25,4 0,099 62,3 50 Outliers excl. 0,148 ± 0,005 99,8 ± 3,1 0,011 7,7 45 Unit mg/l % mg/l % Sample N131B Parameter Total P (as PO4) Target value ± U (k=2) IFA result ± U (k=2) 0,076 mg/l ± 0,001 mg/l 0,079 mg/l ± 0,011 mg/l Stability test ± U (k=2) 0,084 mg/l ± 0,012 mg/l Result [mg/l] Lab Code Result ± Unit Recovery z-Score A 0,074 0,003 mg/l 97% -0,20 0,01 B 0,081 mg/l 107% 0,51 C 0,0819 mg/l 108% 0,60 D 0,076 mg/l 100% 0,00 E 0,0754 mg/l 99% -0,06 mg/l 100% -0,02 F mg/l G 0,0758 H 0,077 0,005 mg/l 101% 0,10 I 0,075 0,003 mg/l 99% -0,10 J 0,088 mg/l 116% 1,21 K 0,074 mg/l 97% -0,20 L 0,079 mg/l 104% 0,30 M 0,071 mg/l 93% -0,51 mg/l 132% 2,43 mg/l 104% 0,30 mg/l 101% 0,10 mg/l 114% 1,11 N 0,100 O 0,079 P 0,077 Q 0,087 0,005 * 0,002 0,01 R mg/l S mg/l 30% 0,0228 T 0,083 0,008 mg/l 109% 0,71 0,073 0,009 mg/l 96% -0,30 V 0,080 0,008 mg/l 105% 0,40 W 0,072 0,001 mg/l 95% -0,40 X 0,077 0,012 mg/l 101% 0,10 Y 0,07 0,00 mg/l 92% -0,61 45% 0,0342 0,110 45% 0,099 30% 0,087 15% 0,076 Target value ± U (k=2) 0,065 - 15% 0,053 - 30% 0,042 - 45% A C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Recovery [%] U Z 15% 0,0114 Deviation 140 Recovery 130 120 mg/l AA 0,077 mg/l 101% 0,10 AB 0,076 0,009 mg/l 100% 0,00 AC 0,088 0,004 mg/l 116% 1,21 AD 0,067 0,009 mg/l 88% -0,91 AE 0,077 0,008 mg/l 101% 0,10 AF 0,0790 0,0019 mg/l 104% 0,30 AG 0,071 0,014 mg/l 93% -0,51 AH 0,086 0,0130 mg/l 113% 1,01 AI mg/l AJ mg/l AK mg/l AL mg/l AM mg/l AN mg/l AO mg/l AP mg/l AQ mg/l AR mg/l AS mg/l 110 100 90 80 70 60 A C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories AT mg/l AU mg/l AV mg/l AW mg/l AX mg/l AY mg/l AZ mg/l BA mg/l BB mg/l BC mg/l BD mg/l BE mg/l BF mg/l BG mg/l BH mg/l BI mg/l BJ mg/l BK mg/l BL mg/l BM mg/l BN mg/l BO mg/l BP Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation mg/l All results 0,078 ± 0,003 102,9 ± 4,4 0,007 8,5 30 Outliers excl. 0,077 ± 0,003 102,0 ± 3,6 0,005 6,9 29 Unit mg/l % mg/l % Sample N131B Parameter Total P (as PO4)_1 Target value ± U (k=2) IFA result ± U (k=2) 0,087 mg/l ± 0,002 mg/l 0,092 mg/l ± 0,013 mg/l Stability test ± U (k=2) 0,097 mg/l ± 0,014 mg/l Lab Code Result ± Unit A mg/l B mg/l C mg/l D mg/l E mg/l F mg/l G mg/l H mg/l I mg/l J mg/l K mg/l L mg/l M mg/l N mg/l O mg/l P mg/l Q mg/l R mg/l S mg/l T mg/l U mg/l V mg/l W mg/l X mg/l Y mg/l Z mg/l AA mg/l AB mg/l AC mg/l AD mg/l AE mg/l AF mg/l AG mg/l AH mg/l AI 0,108 0,011 AJ AK mg/l Recovery 15% 0,0131 Result [mg/l] 30% 0,0261 45% 0,0392 0,126 45% 0,113 30% 0,100 15% 0,087 Target value ± U (k=2) 0,074 - 15% 0,061 - 30% 0,048 - 45% z-Score A C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Recovery [%] Deviation 140 Recovery 130 120 110 100 90 80 124% 1,86 109% 0,71 mg/l 713% 47,13 mg/l 101% 0,09 70 mg/l 0,095 mg/l AL mg/l AM 0,62 AN 0,088 * 0,012 AO A mg/l AP <0,2 AQ 0,05 AR <0,15 AS 0,091 * 0,02 0,002 60 mg/l • mg/l 57% mg/l • mg/l 105% -3,27 0,35 C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories AT 0,12 AU 0,0867 0,0475 AV 138% 2,92 mg/l 100% -0,03 103% 0,25 mg/l AW AX mg/l mg/l 0,0898 0,005 mg/l AY mg/l AZ mg/l BA mg/l BB mg/l BC 0,10 0,02 mg/l 115% 1,15 BD 0,095 0,005 mg/l 109% 0,71 2,03 BE mg/l BF 0,11 0,01 mg/l 126% BG 0,104 0,009 mg/l 120% 1,50 BH 0,083 0,002 mg/l 95% -0,35 <0,15 0,038 BI BJ mg/l BK mg/l • mg/l BL 0,097 BM 0,110 BN 0,076 0,007 0,0076 BO 111% mg/l 126% 0,88 2,03 mg/l 87% -0,97 mg/l BP Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation mg/l mg/l All results 0,125 ± 0,091 143,6 ± 104,7 0,129 102,9 17 Outliers excl. 0,097 ± 0,009 111,4 ± 10,5 0,012 12,2 15 Unit mg/l % mg/l % Sample N131A Parameter KMnO4-Index Target value ± U (k=2) IFA result ± U (k=2) 3,40 mg/l ± 0,09 mg/l 3,57 mg/l ± 0,36 mg/l Stability test ± U (k=2) 3,51 mg/l ± 0,35 mg/l Lab Code Result ± A Unit Recovery Result [mg/l] 3,30 mg/l 97% -0,27 D 3,48 mg/l 102% 0,21 E mg/l F mg/l G mg/l H 0,1 mg/l 0,2 mg/l mg/l N mg/l O 15% 3,40 Target value ± U (k=2) 2,89 - 15% 102% 0,21 2,38 - 30% 0,1 mg/l 1,87 - 45% 100% 0,00 A 3,25 0,5 mg/l 96% -0,40 3,20 0,32 mg/l 94% -0,53 T mg/l U mg/l V 0,05 mg/l X mg/l Y mg/l Z mg/l AA mg/l AB mg/l 93% -0,61 3,31 0,3 mg/l 97% -0,24 3,9 0,4 mg/l 115% 1,34 mg/l mg/l K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Recovery [%] Deviation Recovery 130 100 90 AG 3,48 0,35 mg/l 102% 0,21 AH 3,5 0,5000 mg/l 103% 0,27 AI 3,25 0,33 mg/l 96% -0,40 107% 0,64 AJ I H 110 AD AF G F 120 AC AE E D 140 mg/l 3,17 C B mg/l S 80 70 mg/l 3,64 mg/l AL mg/l AM mg/l AN mg/l AO mg/l AP mg/l AQ AS 3,91 0,27 R AR 30% 103% mg/l 3,4 Q AK 4,42 mg/l 3,48 M W 45% mg/l K P 4,93 mg/l 3,5 J L 45% 1,530 mg/l C I 30% 1,020 z-Score mg/l B 15% 0,510 A 0,55 mg/l mg/l C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories mg/l 3,2 60 94% -0,53 AT 3,1 AU 3,120 mg/l 91% -0,80 mg/l 92% AV -0,75 3,7 mg/l 109% 0,80 AW 3,331 mg/l 98% -0,18 AX 3,39 mg/l 100% -0,03 1,39 0,6410 0,17 AY mg/l AZ mg/l BA 3,92 0,37 mg/l 115% BB 3,60 0,54 mg/l 106% 0,53 BC 3,3 0,3 mg/l 97% -0,27 101% 0,11 91% -0,83 74% -2,38 BD mg/l BE BF mg/l 3,44 0,3 BG BH mg/l mg/l 3,09 0,81 mg/l BI mg/l BJ mg/l BK mg/l BL BM mg/l 2,51 mg/l * BN mg/l BO mg/l BP Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation mg/l All results 3,37 ± 0,15 99,1 ± 4,5 0,28 8,4 26 Outliers excl. 3,40 ± 0,13 100,1 ± 3,7 0,23 6,6 25 Unit mg/l % mg/l % Sample N131B Parameter KMnO4-Index Target value ± U (k=2) IFA result ± U (k=2) 3,90 mg/l ± 0,08 mg/l 4,10 mg/l ± 0,41 mg/l Stability test ± U (k=2) 4,01 mg/l ± 0,40 mg/l Lab Code Result ± A Unit Recovery Result [mg/l] 4,23 mg/l 108% 0,77 D 3,96 mg/l 102% 0,14 E mg/l F mg/l G mg/l H 0,1 mg/l 0,2 mg/l mg/l N mg/l O 15% 3,90 Target value ± U (k=2) 3,32 - 15% 103% 0,23 2,73 - 30% 0,1 mg/l 2,15 - 45% 100% 0,00 A 3,76 0,5 mg/l 96% -0,33 3,86 0,38 mg/l 99% -0,09 T mg/l U mg/l V 0,18 mg/l X mg/l Y mg/l Z mg/l AA mg/l AB mg/l 97% -0,23 3,88 0,35 mg/l 99% -0,05 4,1 0,41 mg/l 105% 0,47 mg/l mg/l K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Recovery [%] Deviation Recovery 130 100 90 AG 4,16 0,42 mg/l 107% 0,61 AH 3,9 0,0600 mg/l 100% 0,00 AI 3,91 0,39 mg/l 100% 0,02 99% -0,12 AJ I H 110 AD AF G F 120 AC AE E D 140 mg/l 3,80 C B mg/l S 80 70 mg/l 3,85 mg/l AL mg/l AM mg/l AN mg/l AO mg/l AP mg/l AQ AS 4,49 0,23 R AR 30% 103% mg/l 3,9 Q AK 5,07 mg/l 4,00 M W 45% mg/l K P 5,66 mg/l 4,0 J L 45% 1,755 mg/l C I 30% 1,170 z-Score mg/l B 15% 0,585 A 0,61 mg/l mg/l C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories mg/l 3,6 60 92% -0,70 AT 3,6 AU 4,140 mg/l 92% -0,70 mg/l 106% AV 0,56 3,9 mg/l 100% 0,00 AW 3,766 mg/l 97% -0,31 AX 3,85 mg/l 99% -0,12 0,1232 0,17 AY mg/l AZ mg/l BA 4,49 0,43 BB mg/l 115% 1,38 3,52 0,54 mg/l 90% -0,89 BC 3,9 0,3 mg/l 100% 0,00 108% 0,70 98% -0,21 82% -1,68 * BD mg/l BE BF mg/l 4,2 0,4 BG BH mg/l mg/l 3,81 0,82 mg/l BI mg/l BJ mg/l BK mg/l BL BM mg/l 3,18 mg/l * BN mg/l BO mg/l BP Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation mg/l All results 3,89 ± 0,14 99,9 ± 3,6 0,26 6,6 26 Outliers excl. 3,90 ± 0,11 100,0 ± 2,7 0,18 4,7 24 Unit mg/l % mg/l % Sample N131A Parameter Silicon Target value ± U (k=2) IFA result ± U (k=2) 2,28 mg/l ± 0,05 mg/l 2,18 mg/l ± 0,17 mg/l Stability test ± U (k=2) 2,24 mg/l ± 0,18 mg/l Lab Code Result ± Unit Recovery A 2,22 0,05 mg/l 97% B 2,26 mg/l 99% D 2,18 mg/l 96% E 2,17 mg/l 95% F mg/l 2,15 mg/l 94% H 2,2 0,1 mg/l 96% I 2,26 0,05 mg/l 99% J 2,17 mg/l 95% K 2,28 mg/l 100% L 2,24 mg/l 98% M 2,1 mg/l 92% 0,1 N mg/l P 2,23 Q 2,15 0,2 mg/l 98% mg/l 94% R mg/l S mg/l T mg/l U mg/l V 3,31 45% 2,96 30% 2,62 15% 2,28 Target value ± U (k=2) 1,94 - 15% 1,60 - 30% 1,25 - 45% z-Score 0,006 mg/l mg/l Z 99% 96% mg/l 97% AC 2,26 0,09 mg/l 99% 100 96% 90 AD M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Deviation Recovery mg/l 2,2 0,3 mg/l AF mg/l AG mg/l AH mg/l 2,36 0,24 AJ mg/l 80 104% 70 mg/l 2,6 mg/l * AL mg/l AM mg/l AN mg/l AO mg/l 2,11 0,12 AQ mg/l 114% * 0,05 mg/l C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories 93% mg/l 1,89 60 A mg/l AR AS K J 110 mg/l 0,2 AP I H 120 2,21 AK G F 130 AB AI E D mg/l AA AE C B 140 mg/l 2,19 A Recovery [%] mg/l 2,25 X Y 45% 1,026 mg/l O W Result [mg/l] 30% 0,684 mg/l C G 15% 0,342 83% AT AU mg/l 2,2752 0,2490 AV mg/l AW 2,2 AX 2,15 0,03 mg/l 96% mg/l 94% AY mg/l AZ mg/l BA BB mg/l 2,31 mg/l BC BD 2,2 0,06 mg/l 2,24 0,2 mg/l mg/l BH mg/l BI 98% mg/l 2,59 * 0,65 BK mg/l 114% mg/l BL BM 96% mg/l BG BJ 101% mg/l BE BF 100% mg/l mg/l 2,72 mg/l * BN mg/l BO mg/l BP Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation 119% mg/l All results 2,25 ± 0,08 98,5 ± 3,5 0,16 7,0 30 Outliers excl. 2,21 ± 0,03 97,1 ± 1,4 0,06 2,7 26 Unit mg/l % mg/l % Sample N131B Parameter Silicon Target value ± U (k=2) IFA result ± U (k=2) 4,56 mg/l ± 0,11 mg/l 4,39 mg/l ± 0,35 mg/l Stability test ± U (k=2) 4,47 mg/l ± 0,36 mg/l Lab Code Result ± Unit Recovery A 4,47 0,05 mg/l 98% B 4,46 mg/l 98% D 4,37 mg/l 96% E 4,39 mg/l 96% F mg/l 4,25 mg/l 4,4 0,1 mg/l 96% I 4,67 0,08 mg/l 102% J 4,38 mg/l 96% K 4,58 mg/l 100% L 4,60 mg/l 101% M 4,2 mg/l 92% 0,1 N 6,61 45% 5,93 30% 5,24 15% 4,56 Target value ± U (k=2) 3,88 - 15% 3,19 - 30% 2,51 - 45% z-Score mg/l O mg/l P 4,51 Q 4,29 0,2 mg/l 99% mg/l 94% R mg/l S mg/l T mg/l U mg/l V 0,03 mg/l mg/l Z 99% 97% mg/l 96% AC 4,51 0,18 mg/l 99% 100 94% 90 AD M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories Deviation Recovery mg/l 4,3 0,5 mg/l AF mg/l AG mg/l AH mg/l 4,64 0,46 AJ mg/l 80 102% 70 mg/l 6,4 mg/l * AL mg/l AM mg/l AN mg/l AO mg/l 4,22 0,21 AQ mg/l 140% 0,05 mg/l C B E D G F I H K J M L O N Q P S R U T W V Y X Z AA AC AE AG AI AK AM AO AQ AS AU AW AY BA BC BE BG BI BK BM BO AB AD AF AH AJ AL AN AP AR AT AV AX AZ BB BD BF BH BJ BL BN BP Laboratories 93% mg/l 4,02 60 A mg/l AR AS K J 110 mg/l 0,4 AP I H 120 4,37 AK G F 130 AB AI E D mg/l AA AE C B 140 mg/l 4,44 A Recovery [%] mg/l 4,53 X Y 45% 2,052 93% H W Result [mg/l] 30% 1,368 mg/l C G 15% 0,684 88% AT AU mg/l 4,7503 0,2686 AV mg/l AW 4,5 AX 4,23 0,03 mg/l 99% mg/l 93% AY mg/l AZ mg/l BA BB mg/l 4,80 mg/l BC BD 4,2 0,06 mg/l 4,53 0,4 mg/l mg/l BH mg/l BI 99% mg/l 5,14 1,3 BK mg/l 113% mg/l BL BM 92% mg/l BG BJ 105% mg/l BE BF 104% mg/l mg/l 11,4 mg/l * BN mg/l BO mg/l BP Mean ± CI(99%) Recov. ± CI(99%) SD between labs RSD between labs n for calculation 250% mg/l All results 4,75 ± 0,67 104,2 ± 14,6 1,32 27,8 30 Outliers excl. 4,46 ± 0,12 97,7 ± 2,6 0,22 5,0 28 Unit mg/l % mg/l % Illustration of Results Laboratory Oriented Part Round N131 Major Ions Sample Dispatch: 14 March 2016 Sample N131A Laboratory A Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery 486 3 µS/cm 101% Conductivity 479 1 Total hardness 9,47 0,07 Alkalinity 1,79 0,01 1,72 0,05 mmol/l 96% Hydrogen carbonate 106 1 102 3 mg/l 96% Calcium 37,5 0,3 mg/l Magnesium 18,3 0,2 mg/l Sodium 26,8 0,2 mg/l Potassium 2,52 0,03 mg/l Nitrate 50,5 1,0 Nitrite 0,040 0,001 Ammonium <0,01 Chloride 42,1 0,5 Sulphate 39,4 0,5 Orthophosphate 0,090 0,001 Boron <0,02 °d mg/l 0,039 0,003 mg/l <0,02 0,01 mg/l 98% • 41,9 2 mg/l 100% 0,088 0,003 mg/l mg/l 98% mg/l DOC 4,06 0,05 Total P (as PO4) 0,148 0,002 KMnO4-Index 3,40 0,09 Silicon 2,28 0,05 mg/l 0,150 0,003 mg/l 101% mg/l 2,22 0,05 mg/l 97% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory A Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 361 3 µS/cm °d 101% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,83 170 0,05 3 mmol/l mg/l 96% 96% Calcium Magnesium 27,5 6,73 0,3 0,08 mg/l mg/l Sodium Potassium 36,8 7,55 0,3 0,04 mg/l mg/l Nitrate Nitrite 4,87 0,083 0,11 0,001 0,083 0,003 mg/l mg/l 100% Ammonium Chloride 0,050 8,02 0,001 0,02 0,05 7,8 0,01 2 mg/l mg/l 100% 97% Sulphate Orthophosphate 22,8 0,071 0,3 0,001 0,072 0,003 mg/l mg/l 101% Boron DOC 0,071 2,63 0,001 0,04 Total P (as PO4) KMnO4-Index 0,076 3,90 0,001 0,08 0,074 0,003 mg/l mg/l 97% Silicon 4,56 0,11 4,47 0,05 mg/l 98% mg/l mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131A Laboratory B Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery 483 5 µS/cm 101% Conductivity 479 1 Total hardness 9,47 0,07 Alkalinity 1,79 0,01 Hydrogen carbonate 106 1 mg/l Calcium 37,5 0,3 mg/l Magnesium 18,3 0,2 mg/l Sodium 26,8 0,2 mg/l Potassium 2,52 0,03 mg/l Nitrate 50,5 1,0 Nitrite 0,040 0,001 Ammonium <0,01 Chloride 42,1 °d 1,77 0,05 39,4 0,5 Orthophosphate 0,090 0,001 Boron <0,02 99% mg/l 0,041 0,01 mg/l 103% <0,025 0,01 mg/l • 0,5 Sulphate mmol/l mg/l mg/l 0,089 0,01 mg/l 99% mg/l DOC 4,06 0,05 Total P (as PO4) 0,148 0,002 mg/l KMnO4-Index 3,40 0,09 mg/l Silicon 2,28 0,05 mg/l 0,147 0,01 mg/l 99% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory B Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 359 5 µS/cm °d 101% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,88 0,05 mmol/l mg/l 97% Calcium Magnesium 27,5 6,73 0,3 0,08 mg/l mg/l Sodium Potassium 36,8 7,55 0,3 0,04 mg/l mg/l Nitrate Nitrite 4,87 0,083 0,11 0,001 Ammonium Chloride 0,050 8,02 0,001 0,02 Sulphate Orthophosphate 22,8 0,071 0,3 0,001 Boron DOC 0,071 2,63 0,001 0,04 Total P (as PO4) KMnO4-Index 0,076 3,90 0,001 0,08 Silicon 4,56 0,11 0,083 0,01 0,054 0,01 0,070 0,01 mg/l mg/l mg/l mg/l mg/l mg/l 100% 108% 99% mg/l mg/l 0,081 0,01 mg/l mg/l 107% mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131A Laboratory C Parameter Recovery [%] Target value ± U (k=2) Result Unit Recovery µS/cm 98% Conductivity 479 1 Total hardness 9,47 0,07 Alkalinity 1,79 0,01 Hydrogen carbonate 106 1 mg/l Calcium 37,5 0,3 mg/l Magnesium 18,3 0,2 mg/l Sodium 26,8 0,2 mg/l Potassium 2,52 0,03 Nitrate 50,5 1,0 46,3 mg/l 92% Nitrite 0,040 0,001 0,0401 mg/l 100% Ammonium <0,01 <0,03 mg/l • Chloride 42,1 43,4 mg/l 103% 0,5 Sulphate 39,4 0,5 Orthophosphate 0,090 0,001 Boron <0,02 471 ± °d 1,76 mmol/l 98% mg/l mg/l 0,0954 mg/l 106% mg/l DOC 4,06 0,05 4,42 mg/l 109% Total P (as PO4) 0,148 0,002 0,141 mg/l 95% KMnO4-Index 3,40 0,09 3,30 mg/l 97% Silicon 2,28 0,05 2,26 mg/l 99% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory C Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 348 µS/cm °d 98% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,91 mmol/l mg/l 98% Calcium Magnesium 27,5 6,73 0,3 0,08 mg/l mg/l Sodium Potassium 36,8 7,55 0,3 0,04 mg/l mg/l Nitrate Nitrite 4,87 0,083 0,11 0,001 4,20 0,0811 mg/l mg/l 86% 98% Ammonium Chloride 0,050 8,02 0,001 0,02 0,043 9,1 mg/l mg/l 86% 113% Sulphate Orthophosphate 22,8 0,071 0,3 0,001 0,0745 mg/l mg/l 105% Boron DOC 0,071 2,63 0,001 0,04 3,05 mg/l mg/l 116% Total P (as PO4) KMnO4-Index 0,076 3,90 0,001 0,08 0,0819 4,23 mg/l mg/l 108% 108% Silicon 4,56 0,11 4,46 mg/l 98% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131A Laboratory D Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity 479 1 490 µS/cm 102% Total hardness 9,47 0,07 9,52 °d 101% Alkalinity 1,79 0,01 1,75 mmol/l 98% Hydrogen carbonate 106 1 103,7 mg/l 98% Calcium 37,5 0,3 38,1 mg/l 102% Magnesium 18,3 0,2 18,0 mg/l 98% Sodium 26,8 0,2 27,0 mg/l 101% Potassium 2,52 0,03 2,31 mg/l 92% Nitrate 50,5 1,0 47,2 mg/l 93% Nitrite 0,040 0,001 0,045 mg/l 113% Ammonium <0,01 <0,020 mg/l • Chloride 42,1 42,5 mg/l 101% 0,5 Sulphate 39,4 0,5 Orthophosphate 0,090 0,001 mg/l Boron <0,02 DOC 4,06 0,05 Total P (as PO4) 0,148 0,002 0,139 mg/l 94% KMnO4-Index 3,40 0,09 3,48 mg/l 102% Silicon 2,28 0,05 2,18 mg/l 96% 0,087 mg/l 97% <0,05 mg/l • mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory D Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 360 5,43 µS/cm °d 101% 101% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,89 173,3 mmol/l mg/l 98% 98% Calcium Magnesium 27,5 6,73 0,3 0,08 27,8 6,62 mg/l mg/l 101% 98% Sodium Potassium 36,8 7,55 0,3 0,04 36,3 7,70 mg/l mg/l 99% 102% Nitrate Nitrite 4,87 0,083 0,11 0,001 4,56 0,088 mg/l mg/l 94% 106% Ammonium Chloride 0,050 8,02 0,001 0,02 0,051 7,8 mg/l mg/l 102% 97% Sulphate Orthophosphate 22,8 0,071 0,3 0,001 0,073 mg/l mg/l 103% Boron DOC 0,071 2,63 0,001 0,04 0,097 mg/l mg/l 137% Total P (as PO4) KMnO4-Index 0,076 3,90 0,001 0,08 0,076 3,96 mg/l mg/l 100% 102% Silicon 4,56 0,11 4,37 mg/l 96% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131A Laboratory E Parameter Recovery [%] Target value ± U (k=2) Result 478 ± Unit Recovery µS/cm 100% Conductivity 479 1 Total hardness 9,47 0,07 Alkalinity 1,79 0,01 Hydrogen carbonate 106 1 mg/l Calcium 37,5 0,3 mg/l Magnesium 18,3 0,2 mg/l Sodium 26,8 0,2 mg/l Potassium 2,52 0,03 mg/l Nitrate 50,5 1,0 Nitrite 0,040 0,001 Ammonium <0,01 Chloride 42,1 °d 1,78 39,4 0,5 Orthophosphate 0,090 0,001 Boron <0,02 99% mg/l 0,0403 mg/l 101% <0,03 mg/l • 0,5 Sulphate mmol/l mg/l mg/l 0,0907 mg/l 101% mg/l DOC 4,06 0,05 4,22 mg/l 104% Total P (as PO4) 0,148 0,002 0,146 mg/l 99% KMnO4-Index 3,40 0,09 Silicon 2,28 0,05 mg/l 2,17 mg/l 95% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory E Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 355 µS/cm °d 100% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,97 mmol/l mg/l 100% Calcium Magnesium 27,5 6,73 0,3 0,08 mg/l mg/l Sodium Potassium 36,8 7,55 0,3 0,04 mg/l mg/l Nitrate Nitrite 4,87 0,083 0,11 0,001 Ammonium Chloride 0,050 8,02 0,001 0,02 Sulphate Orthophosphate 22,8 0,071 0,3 0,001 Boron DOC 0,071 2,63 0,001 0,04 Total P (as PO4) KMnO4-Index 0,076 3,90 0,001 0,08 0,0754 mg/l mg/l 99% Silicon 4,56 0,11 4,39 mg/l 96% 0,0836 0,049 mg/l mg/l mg/l mg/l 101% 98% 0,0720 mg/l mg/l 101% 2,84 mg/l mg/l 108% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131A Laboratory F Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery 437 5 µS/cm 91% Conductivity 479 1 Total hardness 9,47 0,07 Alkalinity 1,79 0,01 Hydrogen carbonate 106 1 mg/l Calcium 37,5 0,3 mg/l Magnesium 18,3 0,2 mg/l Sodium 26,8 0,2 mg/l Potassium 2,52 0,03 mg/l Nitrate 50,5 1,0 Nitrite 0,040 0,001 Ammonium <0,01 Chloride 42,1 °d 1,73 0,1 39,4 0,5 Orthophosphate 0,090 0,001 Boron <0,02 97% mg/l 0,041 0,005 mg/l 103% <0,01 0,005 mg/l • 0,5 Sulphate mmol/l mg/l mg/l 0,087 0,005 mg/l 97% mg/l DOC 4,06 0,05 mg/l Total P (as PO4) 0,148 0,002 mg/l KMnO4-Index 3,40 0,09 mg/l Silicon 2,28 0,05 mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory F Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 323 5 µS/cm °d 91% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,85 0,1 mmol/l mg/l 96% Calcium Magnesium 27,5 6,73 0,3 0,08 mg/l mg/l Sodium Potassium 36,8 7,55 0,3 0,04 mg/l mg/l Nitrate Nitrite 4,87 0,083 0,11 0,001 Ammonium Chloride 0,050 8,02 0,001 0,02 Sulphate Orthophosphate 22,8 0,071 0,3 0,001 Boron DOC 0,071 2,63 0,001 0,04 mg/l mg/l Total P (as PO4) KMnO4-Index 0,076 3,90 0,001 0,08 mg/l mg/l Silicon 4,56 0,11 mg/l 0,086 0,005 0,054 0,005 0,072 0,005 mg/l mg/l mg/l mg/l mg/l mg/l 104% 108% 101% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131A Laboratory G Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity 479 1 476 µS/cm 99% Total hardness 9,47 0,07 9,24 °d 98% Alkalinity 1,79 0,01 1,75 mmol/l 98% Hydrogen carbonate 106 1 mg/l Calcium 37,5 0,3 mg/l Magnesium 18,3 0,2 mg/l Sodium 26,8 0,2 mg/l Potassium 2,52 0,03 Nitrate 50,5 1,0 49,55 mg/l 98% Nitrite 0,040 0,001 0,0401 mg/l 100% Ammonium <0,01 <0,026 mg/l • Chloride 42,1 42,08 mg/l 100% 0,5 mg/l Sulphate 39,4 0,5 39,33 mg/l 100% Orthophosphate 0,090 0,001 0,0837 mg/l 93% Boron <0,02 mg/l DOC 4,06 0,05 Total P (as PO4) 0,148 0,002 KMnO4-Index 3,40 0,09 Silicon 2,28 0,05 mg/l 0,1396 mg/l 94% mg/l 2,15 mg/l 94% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory G Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 356 5,60 µS/cm °d 100% 104% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,90 mmol/l mg/l 98% Calcium Magnesium 27,5 6,73 0,3 0,08 mg/l mg/l Sodium Potassium 36,8 7,55 0,3 0,04 mg/l mg/l Nitrate Nitrite 4,87 0,083 0,11 0,001 4,76 0,0803 mg/l mg/l 98% 97% Ammonium Chloride 0,050 8,02 0,001 0,02 0,062 8,58 mg/l mg/l 124% 107% Sulphate Orthophosphate 22,8 0,071 0,3 0,001 23,01 0,0690 mg/l mg/l 101% 97% Boron DOC 0,071 2,63 0,001 0,04 Total P (as PO4) KMnO4-Index 0,076 3,90 0,001 0,08 0,0758 mg/l mg/l 100% Silicon 4,56 0,11 4,25 mg/l 93% mg/l mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131A Laboratory H Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity 479 1 483 14 µS/cm 101% Total hardness 9,47 0,07 9,33 0,8 °d 99% Alkalinity 1,79 0,01 1,78 0,07 mmol/l 99% Hydrogen carbonate 106 1 109 4 mg/l 103% Calcium 37,5 0,3 37 4 mg/l 99% Magnesium 18,3 0,2 18 1 mg/l 98% Sodium 26,8 0,2 27 2 mg/l 101% Potassium 2,52 0,03 2,5 0,2 mg/l 99% Nitrate 50,5 1,0 49 2 mg/l 97% Nitrite 0,040 0,001 0,042 0,003 mg/l 105% Ammonium <0,01 <0,030 0,004 mg/l • Chloride 42,1 42 1 mg/l 100% 0,5 Sulphate 39,4 0,5 39 2 mg/l 99% Orthophosphate 0,090 0,001 0,089 0,009 mg/l 99% Boron <0,02 <0,002 0,001 mg/l • DOC 4,06 0,05 4,0 0,2 mg/l 99% Total P (as PO4) 0,148 0,002 0,15 0,01 mg/l 101% KMnO4-Index 3,40 0,09 Silicon 2,28 0,05 mg/l 2,2 0,1 mg/l 96% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory H Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 360 5,46 11 0,5 µS/cm °d 101% 101% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,92 178 0,12 7 mmol/l mg/l 99% 101% Calcium Magnesium 27,5 6,73 0,3 0,08 28 6,7 3 0,4 mg/l mg/l 102% 100% Sodium Potassium 36,8 7,55 0,3 0,04 36 7,5 2 0,5 mg/l mg/l 98% 99% Nitrate Nitrite 4,87 0,083 0,11 0,001 4,7 0,089 0,1 0,005 mg/l mg/l 97% 107% Ammonium Chloride 0,050 8,02 0,001 0,02 0,062 8,0 0,008 0,2 mg/l mg/l 124% 100% Sulphate Orthophosphate 22,8 0,071 0,3 0,001 22 0,070 1 0,007 mg/l mg/l 96% 99% Boron DOC 0,071 2,63 0,001 0,04 0,072 2,7 0,01 0,2 mg/l mg/l 101% 103% Total P (as PO4) KMnO4-Index 0,076 3,90 0,001 0,08 0,077 0,005 mg/l mg/l 101% Silicon 4,56 0,11 4,4 0,1 mg/l 96% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131A Laboratory I Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery 480 5 µS/cm 100% Conductivity 479 1 Total hardness 9,47 0,07 Alkalinity 1,79 0,01 Hydrogen carbonate 106 1 mg/l Calcium 37,5 0,3 mg/l Magnesium 18,3 0,2 mg/l Sodium 26,8 0,2 mg/l Potassium 2,52 0,03 Nitrate 50,5 1,0 50,0 0,8 mg/l 99% Nitrite 0,040 0,001 0,039 0,002 mg/l 98% Ammonium <0,01 <0,03 0,01 mg/l • Chloride 42,1 42,4 3 mg/l 101% 0,096 0,003 0,5 Sulphate 39,4 0,5 Orthophosphate 0,090 0,001 Boron <0,02 °d 1,79 0,05 mmol/l 100% mg/l mg/l mg/l 107% mg/l DOC 4,06 0,05 Total P (as PO4) 0,148 0,002 0,142 0,005 mg/l mg/l 96% KMnO4-Index 3,40 0,09 3,5 0,1 mg/l 103% Silicon 2,28 0,05 2,26 0,05 mg/l 99% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory I Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 359 5 µS/cm °d 101% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,95 0,05 mmol/l mg/l 100% Calcium Magnesium 27,5 6,73 0,3 0,08 mg/l mg/l Sodium Potassium 36,8 7,55 0,3 0,04 mg/l mg/l Nitrate Nitrite 4,87 0,083 0,11 0,001 4,7 0,082 0,1 0,003 mg/l mg/l 97% 99% Ammonium Chloride 0,050 8,02 0,001 0,02 0,06 7,9 0,01 1 mg/l mg/l 120% 99% Sulphate Orthophosphate 22,8 0,071 0,3 0,001 0,080 0,003 mg/l mg/l 113% Boron DOC 0,071 2,63 0,001 0,04 Total P (as PO4) KMnO4-Index 0,076 3,90 0,001 0,08 0,075 4,0 0,003 0,1 mg/l mg/l 99% 103% Silicon 4,56 0,11 4,67 0,08 mg/l 102% mg/l mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131A Laboratory J Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity 479 1 477 µS/cm 100% Total hardness 9,47 0,07 9,4 °d 99% Alkalinity 1,79 0,01 1,61 mmol/l 90% Hydrogen carbonate 106 1 98 mg/l 92% Calcium 37,5 0,3 37,7 mg/l 101% Magnesium 18,3 0,2 17,9 mg/l 98% Sodium 26,8 0,2 Potassium 2,52 0,03 Nitrate 50,5 1,0 49,1 mg/l 97% Nitrite 0,040 0,001 0,043 mg/l 108% Ammonium <0,01 0,002 mg/l • Chloride 42,1 43,8 mg/l 104% 0,5 Sulphate 39,4 0,5 Orthophosphate 0,090 0,001 Boron <0,02 mg/l mg/l mg/l 0,108 mg/l 120% mg/l DOC 4,06 0,05 Total P (as PO4) 0,148 0,002 KMnO4-Index 3,40 0,09 Silicon 2,28 0,05 mg/l 0,153 mg/l 103% mg/l 2,17 mg/l 95% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory J Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 355 5,5 µS/cm °d 100% 102% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,77 169 mmol/l mg/l 94% 95% Calcium Magnesium 27,5 6,73 0,3 0,08 27,5 7,2 mg/l mg/l 100% 107% Sodium Potassium 36,8 7,55 0,3 0,04 Nitrate Nitrite 4,87 0,083 0,11 0,001 3,8 0,085 mg/l mg/l 78% 102% Ammonium Chloride 0,050 8,02 0,001 0,02 0,054 9,6 mg/l mg/l 108% 120% Sulphate Orthophosphate 22,8 0,071 0,3 0,001 0,082 mg/l mg/l 115% Boron DOC 0,071 2,63 0,001 0,04 Total P (as PO4) KMnO4-Index 0,076 3,90 0,001 0,08 0,088 mg/l mg/l 116% Silicon 4,56 0,11 4,38 mg/l 96% mg/l mg/l mg/l mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131A Laboratory K Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity 479 1 485 µS/cm 101% Total hardness 9,47 0,07 9,5 °d 100% Alkalinity 1,79 0,01 1,77 mmol/l 99% Hydrogen carbonate 106 1 Calcium 37,5 0,3 38,1 mg/l 102% Magnesium 18,3 0,2 18,0 mg/l 98% Sodium 26,8 0,2 Potassium 2,52 0,03 Nitrate 50,5 1,0 46,4 mg/l 92% Nitrite 0,040 0,001 0,038 mg/l 95% Ammonium <0,01 <0,01 mg/l • Chloride 42,1 42 mg/l 100% 0,5 Sulphate 39,4 0,5 Orthophosphate 0,090 0,001 Boron <0,02 mg/l mg/l mg/l mg/l 0,092 mg/l 102% mg/l DOC 4,06 0,05 Total P (as PO4) 0,148 0,002 KMnO4-Index 3,40 0,09 Silicon 2,28 0,05 mg/l 0,146 mg/l 99% mg/l 2,28 mg/l 100% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory K Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 355 5,4 µS/cm °d 100% 100% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,90 mmol/l mg/l 98% Calcium Magnesium 27,5 6,73 0,3 0,08 27,7 6,8 mg/l mg/l 101% 101% Sodium Potassium 36,8 7,55 0,3 0,04 Nitrate Nitrite 4,87 0,083 0,11 0,001 4,82 0,078 mg/l mg/l 99% 94% Ammonium Chloride 0,050 8,02 0,001 0,02 0,055 8,0 mg/l mg/l 110% 100% Sulphate Orthophosphate 22,8 0,071 0,3 0,001 0,073 mg/l mg/l 103% Boron DOC 0,071 2,63 0,001 0,04 Total P (as PO4) KMnO4-Index 0,076 3,90 0,001 0,08 0,074 mg/l mg/l 97% Silicon 4,56 0,11 4,58 mg/l 100% mg/l mg/l mg/l mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131A Laboratory L Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity 479 1 479 10 µS/cm 100% Total hardness 9,47 0,07 9,2 0,1 °d 97% Alkalinity 1,79 0,01 1,77 0,05 mmol/l 99% Hydrogen carbonate 106 1 108 mg/l 102% Calcium 37,5 0,3 36,9 1 mg/l 98% Magnesium 18,3 0,2 17,7 1 mg/l 97% Sodium 26,8 0,2 mg/l Potassium 2,52 0,03 mg/l Nitrate 50,5 1,0 Nitrite 0,040 0,001 Ammonium <0,01 Chloride 42,1 mg/l 0,042 0,005 <0,02 0,5 Sulphate 39,4 0,5 Orthophosphate 0,090 0,001 Boron <0,02 41,2 1 0,090 0,005 mg/l 105% mg/l • mg/l 98% mg/l mg/l 100% mg/l DOC 4,06 0,05 Total P (as PO4) 0,148 0,002 0,147 0,005 mg/l mg/l 99% KMnO4-Index 3,40 0,09 3,48 0,2 mg/l 102% Silicon 2,28 0,05 2,24 0,1 mg/l 98% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory L Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 356 5,3 10 0,1 µS/cm °d 100% 98% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,92 178 0,05 mmol/l mg/l 99% 101% Calcium Magnesium 27,5 6,73 0,3 0,08 26,9 6,8 1 0,5 mg/l mg/l 98% 101% Sodium Potassium 36,8 7,55 0,3 0,04 Nitrate Nitrite 4,87 0,083 0,11 0,001 0,086 0,005 mg/l mg/l 104% Ammonium Chloride 0,050 8,02 0,001 0,02 0,048 8,2 0,005 0,5 mg/l mg/l 96% 102% Sulphate Orthophosphate 22,8 0,071 0,3 0,001 0,071 0,005 mg/l mg/l 100% Boron DOC 0,071 2,63 0,001 0,04 Total P (as PO4) KMnO4-Index 0,076 3,90 0,001 0,08 0,079 4,00 0,005 0,2 mg/l mg/l 104% 103% Silicon 4,56 0,11 4,60 0,1 mg/l 101% mg/l mg/l mg/l mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131A Laboratory M Parameter Recovery [%] Target value ± U (k=2) Result 474 ± Unit Recovery µS/cm 99% Conductivity 479 1 Total hardness 9,47 0,07 °d Alkalinity 1,79 0,01 mmol/l Hydrogen carbonate 106 1 Calcium 37,5 0,3 37,4 mg/l 100% Magnesium 18,3 0,2 17,0 mg/l 93% Sodium 26,8 0,2 Potassium 2,52 0,03 Nitrate 50,5 1,0 47 mg/l 93% Nitrite 0,040 0,001 0,041 mg/l 103% Ammonium <0,01 <0,03 mg/l • Chloride 42,1 mg/l mg/l mg/l 0,5 Sulphate 39,4 0,5 Orthophosphate 0,090 0,001 Boron <0,02 mg/l mg/l 0,092 mg/l 102% mg/l DOC 4,06 0,05 Total P (as PO4) 0,148 0,002 KMnO4-Index 3,40 0,09 Silicon 2,28 0,05 mg/l 0,138 mg/l 93% mg/l 2,1 mg/l 92% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory M Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 352 µS/cm °d 99% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,85 mmol/l mg/l 96% Calcium Magnesium 27,5 6,73 0,3 0,08 mg/l mg/l Sodium Potassium 36,8 7,55 0,3 0,04 mg/l mg/l Nitrate Nitrite 4,87 0,083 0,11 0,001 4,4 0,082 mg/l mg/l 90% 99% Ammonium Chloride 0,050 8,02 0,001 0,02 0,05 8 mg/l mg/l 100% 100% Sulphate Orthophosphate 22,8 0,071 0,3 0,001 0,070 mg/l mg/l 99% Boron DOC 0,071 2,63 0,001 0,04 Total P (as PO4) KMnO4-Index 0,076 3,90 0,001 0,08 0,071 mg/l mg/l 93% Silicon 4,56 0,11 4,2 mg/l 92% mg/l mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131A Laboratory N Parameter Recovery [%] Target value ± U (k=2) Result ± 486 Unit Recovery µS/cm 101% Conductivity 479 1 Total hardness 9,47 0,07 Alkalinity 1,79 0,01 Hydrogen carbonate 106 1 mg/l Calcium 37,5 0,3 mg/l Magnesium 18,3 0,2 mg/l Sodium 26,8 0,2 mg/l Potassium 2,52 0,03 Nitrate 50,5 1,0 50,0 0,502 mg/l 99% Nitrite 0,040 0,001 0,041 0,0004 mg/l 103% Ammonium <0,01 mg/l • Chloride 42,1 °d 1,77 0,018 <0,03 39,4 0,5 Orthophosphate 0,090 0,001 Boron <0,02 99% mg/l 0,5 Sulphate mmol/l mg/l mg/l 0,098 0,002 mg/l 109% mg/l DOC 4,06 0,05 Total P (as PO4) 0,148 0,002 mg/l KMnO4-Index 3,40 0,09 mg/l Silicon 2,28 0,05 mg/l 0,168 0,003 mg/l 114% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory N Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery µS/cm °d 101% mmol/l mg/l 99% Conductivity Total hardness 356 5,40 1 0,05 359 Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,92 Calcium Magnesium 27,5 6,73 0,3 0,08 mg/l mg/l Sodium Potassium 36,8 7,55 0,3 0,04 mg/l mg/l Nitrate Nitrite 4,87 0,083 0,11 0,001 4,85 0,085 0,049 0,0009 mg/l mg/l 100% 102% Ammonium Chloride 0,050 8,02 0,001 0,02 0,044 0,0028 mg/l mg/l 88% Sulphate Orthophosphate 22,8 0,071 0,3 0,001 0,076 0,001 Boron DOC 0,071 2,63 0,001 0,04 Total P (as PO4) KMnO4-Index 0,076 3,90 0,001 0,08 Silicon 4,56 0,11 0,029 mg/l mg/l 107% mg/l mg/l 0,100 0,002 mg/l mg/l 132% mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131A Laboratory O Parameter Recovery [%] Target value ± U (k=2) Result 487 ± Unit Recovery µS/cm 102% Conductivity 479 1 Total hardness 9,47 0,07 Alkalinity 1,79 0,01 Hydrogen carbonate 106 1 mg/l Calcium 37,5 0,3 mg/l Magnesium 18,3 0,2 mg/l Sodium 26,8 0,2 mg/l Potassium 2,52 0,03 mg/l Nitrate 50,5 1,0 Nitrite 0,040 0,001 Ammonium <0,01 Chloride 42,1 °d 1,68 39,4 0,5 Orthophosphate 0,090 0,001 Boron <0,02 94% mg/l 0,039 mg/l 98% <0,02 mg/l • 0,5 Sulphate mmol/l mg/l mg/l 0,090 mg/l 100% mg/l DOC 4,06 0,05 Total P (as PO4) 0,148 0,002 mg/l KMnO4-Index 3,40 0,09 mg/l Silicon 2,28 0,05 mg/l 0,153 mg/l 103% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory O Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 358 µS/cm °d 101% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,68 mmol/l mg/l 91% Calcium Magnesium 27,5 6,73 0,3 0,08 mg/l mg/l Sodium Potassium 36,8 7,55 0,3 0,04 mg/l mg/l Nitrate Nitrite 4,87 0,083 0,11 0,001 Ammonium Chloride 0,050 8,02 0,001 0,02 Sulphate Orthophosphate 22,8 0,071 0,3 0,001 Boron DOC 0,071 2,63 0,001 0,04 Total P (as PO4) KMnO4-Index 0,076 3,90 0,001 0,08 Silicon 4,56 0,11 0,082 0,060 0,070 mg/l mg/l mg/l mg/l mg/l mg/l 99% 120% 99% mg/l mg/l 0,079 mg/l mg/l 104% mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131A Laboratory P Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity 479 1 474 5 µS/cm 99% Total hardness 9,47 0,07 9,49 0,2 °d 100% Alkalinity 1,79 0,01 1,74 0,1 mmol/l 97% Hydrogen carbonate 106 1 106,3 5 mg/l 100% Calcium 37,5 0,3 38,3 1 mg/l 102% Magnesium 18,3 0,2 18,0 0,5 mg/l 98% Sodium 26,8 0,2 Potassium 2,52 0,03 Nitrate 50,5 1,0 47 2 mg/l 93% Nitrite 0,040 0,001 0,041 0,05 mg/l 103% Ammonium <0,01 <0,02 0,02 mg/l • Chloride 42,1 41,9 2 mg/l 100% 0,091 0,01 0,5 Sulphate 39,4 0,5 Orthophosphate 0,090 0,001 Boron <0,02 mg/l mg/l mg/l mg/l 101% mg/l DOC 4,06 0,05 Total P (as PO4) 0,148 0,002 0,148 0,01 mg/l mg/l 100% KMnO4-Index 3,40 0,09 3,4 0,1 mg/l 100% Silicon 2,28 0,05 2,23 0,2 mg/l 98% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory P Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 358 5,43 5 0,2 µS/cm °d 101% 101% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,89 176,5 0,1 5 mmol/l mg/l 98% 100% Calcium Magnesium 27,5 6,73 0,3 0,08 28,0 6,6 1 0,5 mg/l mg/l 102% 98% Sodium Potassium 36,8 7,55 0,3 0,04 Nitrate Nitrite 4,87 0,083 0,11 0,001 4,5 0,084 2 0,05 mg/l mg/l 92% 101% Ammonium Chloride 0,050 8,02 0,001 0,02 0,05 7,9 0,02 2 mg/l mg/l 100% 99% Sulphate Orthophosphate 22,8 0,071 0,3 0,001 0,070 0,01 mg/l mg/l 99% Boron DOC 0,071 2,63 0,001 0,04 Total P (as PO4) KMnO4-Index 0,076 3,90 0,001 0,08 0,077 3,9 0,01 0,1 mg/l mg/l 101% 100% Silicon 4,56 0,11 4,51 0,2 mg/l 99% mg/l mg/l mg/l mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131A Laboratory Q Parameter Recovery [%] Target value ± U (k=2) Result Unit Recovery µS/cm 100% Conductivity 479 1 Total hardness 9,47 0,07 Alkalinity 1,79 0,01 Hydrogen carbonate 106 1 mg/l Calcium 37,5 0,3 mg/l Magnesium 18,3 0,2 mg/l Sodium 26,8 0,2 mg/l Potassium 2,52 0,03 Nitrate 50,5 1,0 49,3 mg/l 98% Nitrite 0,040 0,001 0,040 mg/l 100% Ammonium <0,01 0,010 mg/l • Chloride 42,1 41,1 mg/l 98% 0,5 480 ± °d 1,76 mmol/l 98% mg/l Sulphate 39,4 0,5 38,3 mg/l 97% Orthophosphate 0,090 0,001 0,076 mg/l 84% Boron <0,02 mg/l DOC 4,06 0,05 3,99 mg/l 98% Total P (as PO4) 0,148 0,002 0,144 mg/l 97% KMnO4-Index 3,40 0,09 Silicon 2,28 0,05 mg/l 2,15 mg/l 94% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory Q Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 356 µS/cm °d 100% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,94 mmol/l mg/l 99% Calcium Magnesium 27,5 6,73 0,3 0,08 mg/l mg/l Sodium Potassium 36,8 7,55 0,3 0,04 mg/l mg/l Nitrate Nitrite 4,87 0,083 0,11 0,001 4,75 0,082 mg/l mg/l 98% 99% Ammonium Chloride 0,050 8,02 0,001 0,02 0,056 8,33 mg/l mg/l 112% 104% Sulphate Orthophosphate 22,8 0,071 0,3 0,001 21,5 0,061 mg/l mg/l 94% 86% Boron DOC 0,071 2,63 0,001 0,04 2,31 mg/l mg/l Total P (as PO4) KMnO4-Index 0,076 3,90 0,001 0,08 0,087 mg/l mg/l 114% Silicon 4,56 0,11 4,29 mg/l 94% 88% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131A Laboratory R Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity 479 1 479 10 µS/cm 100% Total hardness 9,47 0,07 9,4 0,9 °d 99% Alkalinity 1,79 0,01 1,78 0,2 mmol/l 99% Hydrogen carbonate 106 1 109 11 mg/l 103% Calcium 37,5 0,3 36,6 3,7 mg/l 98% Magnesium 18,3 0,2 18,5 1,9 mg/l 101% Sodium 26,8 0,2 26,4 2,6 mg/l 99% Potassium 2,52 0,03 2,42 0,24 mg/l 96% Nitrate 50,5 1,0 49,2 4,9 mg/l 97% Nitrite 0,040 0,001 0,040 0,010 mg/l 100% Ammonium <0,01 Chloride 42,1 mg/l • 0,5 <0,010 41,1 4,1 mg/l 98% 38,8 3,9 mg/l 98% Sulphate 39,4 0,5 Orthophosphate 0,090 0,001 Boron <0,02 DOC 4,06 0,05 Total P (as PO4) 0,148 0,002 KMnO4-Index 3,40 0,09 Silicon 2,28 0,05 mg/l mg/l mg/l mg/l 3,25 0,5 mg/l 96% mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory R Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 357 5,3 10 0,5 µS/cm °d 100% 98% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,90 177 0,3 18 mmol/l mg/l 98% 100% Calcium Magnesium 27,5 6,73 0,3 0,08 26,7 6,76 2,7 0,68 mg/l mg/l 97% 100% Sodium Potassium 36,8 7,55 0,3 0,04 36,1 7,20 3,6 0,72 mg/l mg/l 98% 95% Nitrate Nitrite 4,87 0,083 0,11 0,001 4,7 0,084 0,5 0,010 mg/l mg/l 97% 101% Ammonium Chloride 0,050 8,02 0,001 0,02 0,048 7,8 0,010 0,8 mg/l mg/l 96% 97% Sulphate Orthophosphate 22,8 0,071 0,3 0,001 22,1 2,2 mg/l mg/l 97% Boron DOC 0,071 2,63 0,001 0,04 Total P (as PO4) KMnO4-Index 0,076 3,90 0,001 0,08 Silicon 4,56 0,11 mg/l mg/l 3,76 0,5 mg/l mg/l 96% mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131A Laboratory S Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity 479 1 484 10 µS/cm 101% Total hardness 9,47 0,07 9,11 0,91 °d 96% Alkalinity 1,79 0,01 1,78 0,11 mmol/l 99% Hydrogen carbonate 106 1 108 6,5 mg/l 102% Calcium 37,5 0,3 35,1 3,6 mg/l 94% Magnesium 18,3 0,2 18,3 1,9 mg/l 100% Sodium 26,8 0,2 27,1 2,8 mg/l 101% Potassium 2,52 0,03 2,38 0,28 mg/l 94% Nitrate 50,5 1,0 48,2 2,2 mg/l 95% Nitrite 0,040 0,001 0,041 0,002 mg/l 103% Ammonium <0,01 <0,025 0,007 mg/l • Chloride 42,1 41,9 2,2 mg/l 100% 0,5 Sulphate 39,4 0,5 38,5 1,7 mg/l 98% Orthophosphate 0,090 0,001 0,094 0,005 mg/l 104% Boron <0,02 DOC 4,06 0,05 Total P (as PO4) 0,148 0,002 KMnO4-Index 3,40 0,09 Silicon 2,28 0,05 mg/l mg/l mg/l 3,20 0,32 mg/l 94% mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory S Parameter Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 363 5,13 7 0,51 µS/cm °d 102% 95% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,93 179 0,18 10,7 mmol/l mg/l 99% 101% Calcium Magnesium 27,5 6,73 0,3 0,08 26,0 6,53 2,7 0,67 mg/l mg/l 95% 97% Sodium Potassium 36,8 7,55 0,3 0,04 37,9 7,43 3,9 0,88 mg/l mg/l 103% 98% Nitrate Nitrite 4,87 0,083 0,11 0,001 4,73 0,084 0,21 0,004 mg/l mg/l 97% 101% Ammonium Chloride 0,050 8,02 0,001 0,02 <0,025 7,78 0,007 0,41 mg/l mg/l FN 97% Sulphate Orthophosphate 22,8 0,071 0,3 0,001 22,2 0,076 0,95 0,004 mg/l mg/l 97% 107% Boron DOC 0,071 2,63 0,001 0,04 Total P (as PO4) KMnO4-Index 0,076 3,90 0,001 0,08 Silicon 4,56 0,11 mg/l mg/l 3,86 0,38 mg/l mg/l 99% mg/l Recovery [%] Deviation Recovery 140 130 120 110 100 FN 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131A Laboratory T Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery 4,51 µS/cm 100% °d 104% mmol/l 103% mg/l 104% Conductivity 479 1 481 Total hardness 9,47 0,07 9,83 Alkalinity 1,79 0,01 1,85 Hydrogen carbonate 106 1 109,81 Calcium 37,5 0,3 39,38 3,9 mg/l 105% Magnesium 18,3 0,2 18,77 1,9 mg/l 103% Sodium 26,8 0,2 26,57 2,7 mg/l 99% Potassium 2,52 0,03 2,54 0,27 mg/l 101% 0,19 Nitrate 50,5 1,0 46,88 3,9 mg/l 93% Nitrite 0,040 0,001 0,040 0,004 mg/l 100% Ammonium <0,01 Chloride 42,1 <0,009 0,5 39,71 mg/l • 4,0 mg/l 94% Sulphate 39,4 0,5 37,15 3,7 mg/l 94% Orthophosphate 0,090 0,001 0,098 0,009 mg/l 109% Boron <0,02 DOC 4,06 0,05 3,91 0,39 mg/l 96% Total P (as PO4) 0,148 0,002 0,156 0,015 mg/l 105% KMnO4-Index 3,40 0,09 mg/l Silicon 2,28 0,05 mg/l mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory T Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 360 5,81 4,51 µS/cm °d 101% 108% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 3,00 179,97 0,30 mmol/l mg/l 101% 102% Calcium Magnesium 27,5 6,73 0,3 0,08 29,81 7,11 3,0 0,7 mg/l mg/l 108% 106% Sodium Potassium 36,8 7,55 0,3 0,04 36,32 7,82 3,6 0,81 mg/l mg/l 99% 104% Nitrate Nitrite 4,87 0,083 0,11 0,001 4,94 0,083 0,4 0,008 mg/l mg/l 101% 100% Ammonium Chloride 0,050 8,02 0,001 0,02 0,055 7,63 0,005 0,8 mg/l mg/l 110% 95% Sulphate Orthophosphate 22,8 0,071 0,3 0,001 21,99 0,080 2,2 0,008 mg/l mg/l 96% 113% Boron DOC 0,071 2,63 0,001 0,04 2,58 0,26 mg/l mg/l Total P (as PO4) KMnO4-Index 0,076 3,90 0,001 0,08 0,083 0,008 Silicon 4,56 0,11 mg/l mg/l 98% 109% mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131A Laboratory U Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery 498 25 µS/cm 104% Conductivity 479 1 Total hardness 9,47 0,07 °d Alkalinity 1,79 0,01 mmol/l Hydrogen carbonate 106 1 mg/l Calcium 37,5 0,3 mg/l Magnesium 18,3 0,2 mg/l Sodium 26,8 0,2 mg/l Potassium 2,52 0,03 Nitrate 50,5 1,0 48,7 4,9 mg/l 96% Nitrite 0,040 0,001 0,048 0,013 mg/l 120% Ammonium <0,01 Chloride 42,1 mg/l <0,012 0,5 41,0 mg/l • 4,1 mg/l 97% Sulphate 39,4 0,5 39,3 3,9 mg/l 100% Orthophosphate 0,090 0,001 0,089 0,015 mg/l 99% Boron <0,02 mg/l DOC 4,06 0,05 4,52 0,45 mg/l 111% Total P (as PO4) 0,148 0,002 0,135 0,016 mg/l 91% KMnO4-Index 3,40 0,09 mg/l Silicon 2,28 0,05 mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory U Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery 363 18 µS/cm °d 102% Conductivity Total hardness 356 5,40 1 0,05 Alkalinity Hydrogen carbonate 2,96 177 0,02 1 mmol/l mg/l Calcium Magnesium 27,5 6,73 0,3 0,08 mg/l mg/l Sodium Potassium 36,8 7,55 0,3 0,04 mg/l mg/l Nitrate Nitrite 4,87 0,083 0,11 0,001 4,75 0,092 0,48 0,026 mg/l mg/l 98% 111% Ammonium Chloride 0,050 8,02 0,001 0,02 0,059 7,9 0,014 0,8 mg/l mg/l 118% 99% Sulphate Orthophosphate 22,8 0,071 0,3 0,001 22,6 0,072 2,3 0,012 mg/l mg/l 99% 101% Boron DOC 0,071 2,63 0,001 0,04 3,03 0,30 mg/l mg/l 115% Total P (as PO4) KMnO4-Index 0,076 3,90 0,001 0,08 0,073 0,009 Silicon 4,56 0,11 mg/l mg/l 96% mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131A Laboratory V Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity 479 1 476 10 µS/cm 99% Total hardness 9,47 0,07 9,2 0,9 °d 97% Alkalinity 1,79 0,01 1,76 0,18 mmol/l 98% Hydrogen carbonate 106 1 104 11 mg/l 98% Calcium 37,5 0,3 36,1 3,6 mg/l 96% Magnesium 18,3 0,2 18,2 1,8 mg/l 99% Sodium 26,8 0,2 26,0 2,6 mg/l 97% Potassium 2,52 0,03 2,36 0,24 mg/l 94% Nitrate 50,5 1,0 49,13 4,9 mg/l 97% Nitrite 0,040 0,001 0,039 0,010 mg/l 98% Ammonium <0,01 Chloride 42,1 <0,010 0,5 40,92 mg/l • 4,1 mg/l 97% Sulphate 39,4 0,5 38,8 3,9 mg/l 98% Orthophosphate 0,090 0,001 0,089 0,009 mg/l 99% Boron <0,02 mg/l DOC 4,06 0,05 4,006 0,40 mg/l 99% Total P (as PO4) 0,148 0,002 0,141 0,014 mg/l 95% KMnO4-Index 3,40 0,09 mg/l Silicon 2,28 0,05 mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory V Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 350 5,2 10 0,5 µS/cm °d 98% 96% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,91 178 0,29 18 mmol/l mg/l 98% 101% Calcium Magnesium 27,5 6,73 0,3 0,08 26,5 6,69 2,7 0,70 mg/l mg/l 96% 99% Sodium Potassium 36,8 7,55 0,3 0,04 35,6 7,12 3,6 0,72 mg/l mg/l 97% 94% Nitrate Nitrite 4,87 0,083 0,11 0,001 4,72 0,082 0,5 0,010 mg/l mg/l 97% 99% Ammonium Chloride 0,050 8,02 0,001 0,02 0,049 7,83 0,010 0,8 mg/l mg/l 98% 98% Sulphate Orthophosphate 22,8 0,071 0,3 0,001 22,1 0,074 2,2 0,007 mg/l mg/l 97% 104% Boron DOC 0,071 2,63 0,001 0,04 2,719 0,27 mg/l mg/l 103% Total P (as PO4) KMnO4-Index 0,076 3,90 0,001 0,08 0,080 0,008 Silicon 4,56 0,11 mg/l mg/l 105% mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131A Laboratory W Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery 102% Conductivity 479 1 487 4,0 µS/cm Total hardness 9,47 0,07 9,36 0,03 °d 99% Alkalinity 1,79 0,01 1,81 0,023 mmol/l 101% Hydrogen carbonate 106 1 108 1,2 mg/l 102% Calcium 37,5 0,3 37,6 0,10 mg/l 100% Magnesium 18,3 0,2 18,3 0,06 mg/l 100% Sodium 26,8 0,2 26,6 0,12 mg/l 99% Potassium 2,52 0,03 2,47 0,03 mg/l 98% Nitrate 50,5 1,0 48,1 0,30 mg/l 95% Nitrite 0,040 0,001 0,040 0,0006 mg/l 100% Ammonium <0,01 Chloride 42,1 <0,010 0,5 42,0 mg/l • 0,16 mg/l 100% Sulphate 39,4 0,5 38,7 0,04 mg/l 98% Orthophosphate 0,090 0,001 0,088 0,0002 mg/l 98% Boron <0,02 DOC 4,06 0,05 4,19 Total P (as PO4) 0,148 0,002 KMnO4-Index 3,40 0,09 Silicon 2,28 0,05 <0,010 mg/l • 0,16 mg/l 103% 0,139 0,003 mg/l 94% 3,17 0,05 mg/l 93% 2,25 0,006 mg/l 99% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory W Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 353 5,37 2,6 0,006 µS/cm °d 99% 99% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,99 197 0,006 0,58 mmol/l mg/l 101% 111% Calcium Magnesium 27,5 6,73 0,3 0,08 27,6 6,77 0,06 0,01 mg/l mg/l 100% 101% Sodium Potassium 36,8 7,55 0,3 0,04 36,3 7,29 0,30 0,04 mg/l mg/l 99% 97% Nitrate Nitrite 4,87 0,083 0,11 0,001 3,90 0,083 0,06 0,0005 mg/l mg/l 80% 100% Ammonium Chloride 0,050 8,02 0,001 0,02 0,048 7,66 0,0006 0,05 mg/l mg/l 96% 96% Sulphate Orthophosphate 22,8 0,071 0,3 0,001 22,0 0,0687 0,05 0,0005 mg/l mg/l 96% 97% Boron DOC 0,071 2,63 0,001 0,04 0,072 2,68 0,001 0,07 mg/l mg/l 101% 102% Total P (as PO4) KMnO4-Index 0,076 3,90 0,001 0,08 0,072 3,80 0,001 0,18 mg/l mg/l 95% 97% Silicon 4,56 0,11 4,53 0,03 mg/l 99% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131A Laboratory X Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery 101% Conductivity 479 1 484 14,5 µS/cm Total hardness 9,47 0,07 9,3 1,4 °d 98% Alkalinity 1,79 0,01 1,8 0,18 mmol/l 101% Hydrogen carbonate 106 1 107 10,70 mg/l 101% Calcium 37,5 0,3 37,6 5,6 mg/l 100% Magnesium 18,3 0,2 17,5 2,6 mg/l 96% Sodium 26,8 0,2 26,3 3,9 mg/l 98% Potassium 2,52 0,03 2,51 0,4 mg/l 100% Nitrate 50,5 1,0 45,2 6,8 mg/l 90% Nitrite 0,040 0,001 0,04 0,006 mg/l 100% Ammonium <0,01 Chloride 42,1 0,009 0,001 mg/l • 0,5 38,9 5,8 mg/l 92% Sulphate 39,4 0,5 36,60 5,5 mg/l 93% Orthophosphate 0,090 0,001 0,095 0,014 mg/l 106% Boron <0,02 mg/l • DOC 4,06 0,05 4,40 0,66 mg/l 108% Total P (as PO4) 0,148 0,002 0,137 0,021 mg/l 93% KMnO4-Index 3,40 0,09 mg/l Silicon 2,28 0,05 mg/l <0,02 Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory X Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 362 5,4 10,9 0,8 µS/cm °d 102% 100% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,88 173 0,29 17,30 mmol/l mg/l 97% 98% Calcium Magnesium 27,5 6,73 0,3 0,08 28,3 6,3 4,2 0,9 mg/l mg/l 103% 94% Sodium Potassium 36,8 7,55 0,3 0,04 34,4 8,15 5,2 1,2 mg/l mg/l 93% 108% Nitrate Nitrite 4,87 0,083 0,11 0,001 4,2 0,086 0,6 0,013 mg/l mg/l 86% 104% Ammonium Chloride 0,050 8,02 0,001 0,02 0,055 7,70 0,008 1,2 mg/l mg/l 110% 96% Sulphate Orthophosphate 22,8 0,071 0,3 0,001 21,8 0,077 3,3 0,012 mg/l mg/l 96% 108% Boron DOC 0,071 2,63 0,001 0,04 0,063 2,50 0,009 0,38 mg/l mg/l 89% 95% Total P (as PO4) KMnO4-Index 0,076 3,90 0,001 0,08 0,077 0,012 mg/l mg/l 101% Silicon 4,56 0,11 mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131A Laboratory Y Parameter Recovery [%] Target value ± U (k=2) Result ± 459 Unit Recovery µS/cm 96% Conductivity 479 1 Total hardness 9,47 0,07 Alkalinity 1,79 0,01 1,75 mmol/l 98% Hydrogen carbonate 106 1 106,75 mg/l 101% Calcium 37,5 0,3 37,10 0,37 mg/l 99% Magnesium 18,3 0,2 18,03 0,23 mg/l 99% Sodium 26,8 0,2 26,06 0,04 mg/l 97% Potassium 2,52 0,03 2,36 0,06 mg/l 94% Nitrate 50,5 1,0 54,31 0,07 mg/l 108% Nitrite 0,040 0,001 0,04 0,00 mg/l 100% Ammonium <0,01 0,01 0,00 mg/l • Chloride 42,1 0,5 41,15 0,03 mg/l 98% °d Sulphate 39,4 0,5 41,47 0,04 mg/l 105% Orthophosphate 0,090 0,001 0,07 0,01 mg/l 78% Boron <0,02 mg/l DOC 4,06 0,05 4,51 0,04 mg/l 111% Total P (as PO4) 0,148 0,002 0,13 0,00 mg/l 88% KMnO4-Index 3,40 0,09 Silicon 2,28 0,05 mg/l 2,19 mg/l 96% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory Y Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 344 µS/cm °d 97% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,92 178,12 mmol/l mg/l 99% 101% Calcium Magnesium 27,5 6,73 0,3 0,08 32,94 6,19 5,02 0,05 mg/l mg/l 120% 92% Sodium Potassium 36,8 7,55 0,3 0,04 35,44 35,44 0,22 0,22 mg/l mg/l 96% 469% Nitrate Nitrite 4,87 0,083 0,11 0,001 4,47 0,08 0,07 0,00 mg/l mg/l 92% 96% Ammonium Chloride 0,050 8,02 0,001 0,02 0,04 8,69 0,01 0,10 mg/l mg/l 80% 108% Sulphate Orthophosphate 22,8 0,071 0,3 0,001 24,57 0,06 0,13 0,01 mg/l mg/l 108% 85% Boron DOC 0,071 2,63 0,001 0,04 3,12 0,02 mg/l mg/l 119% Total P (as PO4) KMnO4-Index 0,076 3,90 0,001 0,08 0,07 0,00 Silicon 4,56 0,11 4,44 mg/l mg/l 92% mg/l 97% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131A Laboratory Z Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Conductivity 479 1 Total hardness 9,47 0,07 °d Alkalinity 1,79 0,01 mmol/l µS/cm Hydrogen carbonate 106 1 mg/l Calcium 37,5 0,3 mg/l Magnesium 18,3 0,2 mg/l Sodium 26,8 0,2 mg/l Potassium 2,52 0,03 Nitrate 50,5 1,0 Nitrite 0,040 0,001 Ammonium <0,01 Chloride 42,1 mg/l >35 mg/l <0,01 39,4 0,5 Orthophosphate 0,090 0,001 Boron <0,02 • mg/l mg/l 0,5 Sulphate Recovery • mg/l mg/l 0,082 mg/l 91% mg/l DOC 4,06 0,05 Total P (as PO4) 0,148 0,002 mg/l KMnO4-Index 3,40 0,09 mg/l Silicon 2,28 0,05 mg/l 0,109 0,004 mg/l 74% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory Z Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 µS/cm °d Alkalinity Hydrogen carbonate 2,96 177 0,02 1 mmol/l mg/l Calcium Magnesium 27,5 6,73 0,3 0,08 mg/l mg/l Sodium Potassium 36,8 7,55 0,3 0,04 mg/l mg/l Nitrate Nitrite 4,87 0,083 0,11 0,001 3,81 0,15 mg/l mg/l 78% Ammonium Chloride 0,050 8,02 0,001 0,02 0,054 0 mg/l mg/l 108% Sulphate Orthophosphate 22,8 0,071 0,3 0,001 0,066 0,024 Boron DOC 0,071 2,63 0,001 0,04 mg/l mg/l Total P (as PO4) KMnO4-Index 0,076 3,90 0,001 0,08 mg/l mg/l Silicon 4,56 0,11 mg/l mg/l mg/l 93% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131A Laboratory AA Parameter Recovery [%] Target value ± U (k=2) Result Unit Recovery µS/cm 100% Conductivity 479 1 Total hardness 9,47 0,07 Alkalinity 1,79 0,01 1,79 mmol/l 100% Hydrogen carbonate 106 1 106 mg/l 100% Calcium 37,5 0,3 mg/l Magnesium 18,3 0,2 mg/l Sodium 26,8 0,2 mg/l Potassium 2,52 0,03 Nitrate 50,5 1,0 49,6 mg/l 98% Nitrite 0,040 0,001 0,041 mg/l 103% Ammonium <0,01 <0,005 mg/l • Chloride 42,1 41,5 mg/l 99% 0,5 Sulphate 39,4 0,5 Orthophosphate 0,090 0,001 Boron <0,02 478 ± °d mg/l mg/l 0,086 mg/l 96% mg/l DOC 4,06 0,05 Total P (as PO4) 0,148 0,002 mg/l KMnO4-Index 3,40 0,09 mg/l Silicon 2,28 0,05 mg/l 0,143 mg/l 97% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory AA Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 356 µS/cm °d 100% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,96 177 mmol/l mg/l 100% 100% Calcium Magnesium 27,5 6,73 0,3 0,08 mg/l mg/l Sodium Potassium 36,8 7,55 0,3 0,04 mg/l mg/l Nitrate Nitrite 4,87 0,083 0,11 0,001 4,70 0,084 mg/l mg/l 97% 101% Ammonium Chloride 0,050 8,02 0,001 0,02 0,047 7,63 mg/l mg/l 94% 95% Sulphate Orthophosphate 22,8 0,071 0,3 0,001 0,070 mg/l mg/l 99% Boron DOC 0,071 2,63 0,001 0,04 Total P (as PO4) KMnO4-Index 0,076 3,90 0,001 0,08 Silicon 4,56 0,11 mg/l mg/l 0,077 mg/l mg/l 101% mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131A Laboratory AB Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity 479 1 478 20 µS/cm 100% Total hardness 9,47 0,07 9,31 0,4 °d 98% Alkalinity 1,79 0,01 1,77 0,1 mmol/l 99% Hydrogen carbonate 106 1 105 4 mg/l 99% Calcium 37,5 0,3 37,1 3 mg/l 99% Magnesium 18,3 0,2 17,9 2,2 mg/l 98% Sodium 26,8 0,2 26,4 4 mg/l 99% Potassium 2,52 0,03 2,48 0,4 mg/l 98% Nitrate 50,5 1,0 50,9 4 mg/l 101% Nitrite 0,040 0,001 0,041 0,004 mg/l 103% Ammonium <0,01 Chloride 42,1 <0,013 0,5 42,6 mg/l • 4 mg/l 101% Sulphate 39,4 0,5 39,3 3 mg/l 100% Orthophosphate 0,090 0,001 0,085 0,012 mg/l 94% Boron <0,02 mg/l DOC 4,06 0,05 4,16 0,7 mg/l 102% Total P (as PO4) 0,148 0,002 0,146 0,02 mg/l 99% KMnO4-Index 3,40 0,09 Silicon 2,28 0,05 mg/l 2,21 0,2 mg/l 97% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory AB Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 356 5,31 15 0,3 µS/cm °d 100% 98% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,79 167 0,1 6 mmol/l mg/l 94% 94% Calcium Magnesium 27,5 6,73 0,3 0,08 27,2 6,57 3 0,8 mg/l mg/l 99% 98% Sodium Potassium 36,8 7,55 0,3 0,04 36,1 7,55 6 1,2 mg/l mg/l 98% 100% Nitrate Nitrite 4,87 0,083 0,11 0,001 4,79 0,085 0,3 0,007 mg/l mg/l 98% 102% Ammonium Chloride 0,050 8,02 0,001 0,02 0,052 8,50 0,005 0,7 mg/l mg/l 104% 106% Sulphate Orthophosphate 22,8 0,071 0,3 0,001 23,0 0,069 2 0,01 mg/l mg/l 101% 97% Boron DOC 0,071 2,63 0,001 0,04 2,74 0,5 mg/l mg/l 104% Total P (as PO4) KMnO4-Index 0,076 3,90 0,001 0,08 0,076 0,009 mg/l mg/l 100% Silicon 4,56 0,11 4,37 0,4 mg/l 96% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131A Laboratory AC Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity 479 1 479 19 µS/cm 100% Total hardness 9,47 0,07 9,60 1,73 °d 101% Alkalinity 1,79 0,01 1,77 0,07 mmol/l 99% Hydrogen carbonate 106 1 105 4,2 mg/l 99% Calcium 37,5 0,3 37,5 6,8 mg/l 100% Magnesium 18,3 0,2 18,8 3,4 mg/l 103% Sodium 26,8 0,2 26,8 4,8 mg/l 100% Potassium 2,52 0,03 2,39 0,43 mg/l 95% Nitrate 50,5 1,0 48,6 4,4 mg/l 96% Nitrite 0,040 0,001 0,039 0,004 mg/l 98% Ammonium <0,01 Chloride 42,1 <0,01 0,5 41,0 mg/l • 3,7 mg/l 97% Sulphate 39,4 0,5 38,3 3,4 mg/l 97% Orthophosphate 0,090 0,001 0,095 0,009 mg/l 106% Boron <0,02 mg/l • DOC 4,06 0,05 4,28 0,39 mg/l 105% Total P (as PO4) 0,148 0,002 0,158 0,006 mg/l 107% KMnO4-Index 3,40 0,09 3,31 0,3 mg/l 97% Silicon 2,28 0,05 2,26 0,09 mg/l 99% <0,01 Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory AC Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 356 5,42 14 0,98 µS/cm °d 100% 100% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,93 176 0,12 7,0 mmol/l mg/l 99% 99% Calcium Magnesium 27,5 6,73 0,3 0,08 27,3 6,91 4,9 1,2 mg/l mg/l 99% 103% Sodium Potassium 36,8 7,55 0,3 0,04 36,7 7,22 6,6 1,30 mg/l mg/l 100% 96% Nitrate Nitrite 4,87 0,083 0,11 0,001 4,87 0,079 0,44 0,007 mg/l mg/l 100% 95% Ammonium Chloride 0,050 8,02 0,001 0,02 0,058 7,62 0,005 0,69 mg/l mg/l 116% 95% Sulphate Orthophosphate 22,8 0,071 0,3 0,001 22,1 0,076 2 0,007 mg/l mg/l 97% 107% Boron DOC 0,071 2,63 0,001 0,04 0,072 2,84 0,01 0,26 mg/l mg/l 101% 108% Total P (as PO4) KMnO4-Index 0,076 3,90 0,001 0,08 0,088 3,88 0,004 0,35 mg/l mg/l 116% 99% Silicon 4,56 0,11 4,51 0,18 mg/l 99% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131A Laboratory AD Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity 479 1 477 10 µS/cm 100% Total hardness 9,47 0,07 9,6 1,0 °d 101% Alkalinity 1,79 0,01 1,75 0,12 mmol/l 98% Hydrogen carbonate 106 1 104 8,3 mg/l 98% Calcium 37,5 0,3 39 1,6 mg/l 104% Magnesium 18,3 0,2 18 1,1 mg/l 98% Sodium 26,8 0,2 27 1,1 mg/l 101% Potassium 2,52 0,03 2 0,2 mg/l 79% Nitrate 50,5 1,0 49 3,4 mg/l 97% Nitrite 0,040 0,001 0,041 0,004 mg/l 103% Ammonium <0,01 <0,02 <0,006 mg/l • Chloride 42,1 41 3,3 mg/l 97% 0,5 Sulphate 39,4 0,5 37 2,2 mg/l 94% Orthophosphate 0,090 0,001 0,089 0,013 mg/l 99% Boron <0,02 mg/l DOC 4,06 0,05 4,26 0,68 mg/l Total P (as PO4) 0,148 0,002 0,147 0,019 mg/l 105% 99% KMnO4-Index 3,40 0,09 3,9 0,4 mg/l 115% Silicon 2,28 0,05 mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory AD Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 356 5,5 7 0,6 µS/cm °d 100% 102% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,92 175 0,2 14 mmol/l mg/l 99% 99% Calcium Magnesium 27,5 6,73 0,3 0,08 28 7 1,1 0,4 mg/l mg/l 102% 104% Sodium Potassium 36,8 7,55 0,3 0,04 37 7 1,5 0,6 mg/l mg/l 101% 93% Nitrate Nitrite 4,87 0,083 0,11 0,001 5 0,084 0,2 0,08 mg/l mg/l 103% 101% Ammonium Chloride 0,050 8,02 0,001 0,02 0,041 8 0,013 0,6 mg/l mg/l 82% 100% Sulphate Orthophosphate 22,8 0,071 0,3 0,001 20 0,067 1,2 0,010 mg/l mg/l 88% 94% Boron DOC 0,071 2,63 0,001 0,04 2,76 0,44 mg/l mg/l 105% Total P (as PO4) KMnO4-Index 0,076 3,90 0,001 0,08 0,067 4,1 0,009 0,41 mg/l mg/l 88% 105% Silicon 4,56 0,11 mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131A Laboratory AE Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity 479 1 477 14 µS/cm 100% Total hardness 9,47 0,07 9,5 1,1 °d 100% Alkalinity 1,79 0,01 1,77 0,08 mmol/l 99% Hydrogen carbonate 106 1 105 5 mg/l 99% Calcium 37,5 0,3 37,7 3,4 mg/l 101% Magnesium 18,3 0,2 18,2 1,7 mg/l 99% Sodium 26,8 0,2 26,9 2,2 mg/l 100% Potassium 2,52 0,03 2,42 0,20 mg/l 96% Nitrate 50,5 1,0 49,8 4,5 mg/l 99% Nitrite 0,040 0,001 0,039 0,005 mg/l 98% Ammonium <0,01 Chloride 42,1 <0,008 0,5 42,0 mg/l • 2,1 mg/l 100% Sulphate 39,4 0,5 38,8 2,0 mg/l 98% Orthophosphate 0,090 0,001 0,091 0,009 mg/l 101% Boron <0,02 mg/l • DOC 4,06 0,05 4,13 0,37 mg/l 102% Total P (as PO4) 0,148 0,002 0,150 0,015 mg/l 101% KMnO4-Index 3,40 0,09 Silicon 2,28 0,05 <0,004 mg/l 2,2 0,3 mg/l 96% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory AE Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 354 5,5 11 0,7 µS/cm °d 99% 102% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,93 176 0,12 7 mmol/l mg/l 99% 99% Calcium Magnesium 27,5 6,73 0,3 0,08 28,4 6,72 2,6 0,65 mg/l mg/l 103% 100% Sodium Potassium 36,8 7,55 0,3 0,04 37,0 7,50 3,0 0,52 mg/l mg/l 101% 99% Nitrate Nitrite 4,87 0,083 0,11 0,001 4,65 0,085 0,42 0,009 mg/l mg/l 95% 102% Ammonium Chloride 0,050 8,02 0,001 0,02 0,052 8,47 0,008 0,51 mg/l mg/l 104% 106% Sulphate Orthophosphate 22,8 0,071 0,3 0,001 22,1 0,071 1,2 0,007 mg/l mg/l 97% 100% Boron DOC 0,071 2,63 0,001 0,04 0,074 2,70 0,008 0,25 mg/l mg/l 104% 103% Total P (as PO4) KMnO4-Index 0,076 3,90 0,001 0,08 0,077 0,008 mg/l mg/l 101% Silicon 4,56 0,11 4,3 0,5 mg/l 94% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131A Laboratory AF Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery 99% Conductivity 479 1 475 2,88 µS/cm Total hardness 9,47 0,07 9,31 0,159 °d 98% Alkalinity 1,79 0,01 1,79 0,005 mmol/l 100% Hydrogen carbonate 106 1 106 0,32 mg/l 100% Calcium 37,5 0,3 37,1 0,58 mg/l 99% Magnesium 18,3 0,2 17,9 0,59 mg/l 98% Sodium 26,8 0,2 26,7 0,27 mg/l 100% Potassium 2,52 0,03 2,63 0,060 mg/l 104% Nitrate 50,5 1,0 48,9 0,57 mg/l 97% Nitrite 0,040 0,001 0,0394 0,0009 mg/l 99% Ammonium <0,01 Chloride 42,1 <0,0064 0,5 41,9 mg/l • 0,15 mg/l 100% Sulphate 39,4 0,5 39,3 0,33 mg/l 100% Orthophosphate 0,090 0,001 0,0864 0,0020 mg/l 96% Boron <0,02 DOC 4,06 0,05 4,22 Total P (as PO4) 0,148 0,002 0,1480 KMnO4-Index 3,40 0,09 mg/l Silicon 2,28 0,05 mg/l [0,002] mg/l • 0,01 mg/l 104% 0,0019 mg/l 100% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory AF Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 352 5,37 0,36 0,089 µS/cm °d 99% 99% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,93 175 0,005 0,32 mmol/l mg/l 99% 99% Calcium Magnesium 27,5 6,73 0,3 0,08 27,4 6,66 0,60 0,138 mg/l mg/l 100% 99% Sodium Potassium 36,8 7,55 0,3 0,04 36,2 7,63 0,27 0,257 mg/l mg/l 98% 101% Nitrate Nitrite 4,87 0,083 0,11 0,001 4,72 0,0830 0,09 0,0009 mg/l mg/l 97% 100% Ammonium Chloride 0,050 8,02 0,001 0,02 0,0508 7,93 0,0015 0,03 mg/l mg/l 102% 99% Sulphate Orthophosphate 22,8 0,071 0,3 0,001 22,8 0,0760 0,34 0,0020 mg/l mg/l 100% 107% Boron DOC 0,071 2,63 0,001 0,04 0,068 2,85 0,002 0,01 mg/l mg/l 96% 108% Total P (as PO4) KMnO4-Index 0,076 3,90 0,001 0,08 0,0790 0,0019 mg/l mg/l 104% Silicon 4,56 0,11 mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131A Laboratory AG Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery 100% Conductivity 479 1 481 7 µS/cm Total hardness 9,47 0,07 9,37 0,94 °d 99% Alkalinity 1,79 0,01 1,79 0,09 mmol/l 100% Hydrogen carbonate 106 1 106 5 mg/l 100% Calcium 37,5 0,3 37,5 3,8 mg/l 100% Magnesium 18,3 0,2 17,8 1,8 mg/l 97% Sodium 26,8 0,2 25,6 2,6 mg/l 96% Potassium 2,52 0,03 2,71 0,27 mg/l 108% Nitrate 50,5 1,0 49,5 5,0 mg/l 98% Nitrite 0,040 0,001 0,0411 0,0062 mg/l 103% Ammonium <0,01 Chloride 42,1 <0,010 0,5 41,1 mg/l • 4,1 mg/l 98% Sulphate 39,4 0,5 38,9 3,9 mg/l 99% Orthophosphate 0,090 0,001 0,089 0,013 mg/l 99% Boron <0,02 DOC 4,06 0,05 4,03 Total P (as PO4) 0,148 0,002 KMnO4-Index 3,40 0,09 Silicon 2,28 0,05 <0,020 mg/l • 0,40 mg/l 99% 0,146 0,029 mg/l 99% 3,48 0,35 mg/l 102% mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory AG Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 359 5,34 7 0,54 µS/cm °d 101% 99% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,96 178 0,15 9 mmol/l mg/l 100% 101% Calcium Magnesium 27,5 6,73 0,3 0,08 27,3 6,58 2,7 0,66 mg/l mg/l 99% 98% Sodium Potassium 36,8 7,55 0,3 0,04 34,7 7,76 3,5 0,78 mg/l mg/l 94% 103% Nitrate Nitrite 4,87 0,083 0,11 0,001 4,93 0,0865 0,49 0,0130 mg/l mg/l 101% 104% Ammonium Chloride 0,050 8,02 0,001 0,02 0,050 8,05 0,008 0,81 mg/l mg/l 100% 100% Sulphate Orthophosphate 22,8 0,071 0,3 0,001 22,3 0,070 2,2 0,011 mg/l mg/l 98% 99% Boron DOC 0,071 2,63 0,001 0,04 0,069 2,57 0,010 0,26 mg/l mg/l 97% 98% Total P (as PO4) KMnO4-Index 0,076 3,90 0,001 0,08 0,071 4,16 0,014 0,42 mg/l mg/l 93% 107% Silicon 4,56 0,11 mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131A Laboratory AH Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery 18,9 µS/cm 100% °d 99% Conductivity 479 1 481 Total hardness 9,47 0,07 9,4 Alkalinity 1,79 0,01 1,67 0,183 mmol/l 93% Hydrogen carbonate 106 1 102,1 15,32 mg/l 96% Calcium 37,5 0,3 37,03 1,481 mg/l 99% Magnesium 18,3 0,2 18,23 1,094 mg/l 100% Sodium 26,8 0,2 26,78 1,607 mg/l 100% Potassium 2,52 0,03 2,71 0,271 mg/l 108% Nitrate 50,5 1,0 48,823 1,9529 mg/l 97% Nitrite 0,040 0,001 0,041 0,003 mg/l 103% Ammonium <0,01 Chloride 42,1 0,005 0,0005 mg/l • 0,5 39,93 2,396 mg/l 95% Sulphate 39,4 0,5 37,03 1,481 mg/l 94% Orthophosphate 0,090 0,001 0,84 0,0101 mg/l 933% Boron <0,02 mg/l • DOC 4,06 0,05 4,3 0,34 mg/l 106% Total P (as PO4) 0,148 0,002 0,15 0,0223 mg/l 101% KMnO4-Index 3,40 0,09 3,5 0,5000 mg/l 103% Silicon 2,28 0,05 [0,00114] mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory AH Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 352 5,3 14,1 µS/cm °d 99% 98% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,78 169,3 0,416 25,4 mmol/l mg/l 94% 96% Calcium Magnesium 27,5 6,73 0,3 0,08 27,1 6,58 1,084 0,395 mg/l mg/l 99% 98% Sodium Potassium 36,8 7,55 0,3 0,04 38,2 7,51 2,292 0,751 mg/l mg/l 104% 99% Nitrate Nitrite 4,87 0,083 0,11 0,001 4,626 0,083 0,185 0,0067 mg/l mg/l 95% 100% Ammonium Chloride 0,050 8,02 0,001 0,02 0,047 7,74 0,0047 0,31 mg/l mg/l 94% 97% Sulphate Orthophosphate 22,8 0,071 0,3 0,001 24,82 0,075 1,489 0,009 mg/l mg/l 109% 106% Boron DOC 0,071 2,63 0,001 0,04 0,084 2,9 0,0101 0,23 mg/l mg/l 118% 110% Total P (as PO4) KMnO4-Index 0,076 3,90 0,001 0,08 0,086 3,9 0,0130 0,0600 mg/l mg/l 113% 100% Silicon 4,56 0,11 mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131A Laboratory AI Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery 101% Conductivity 479 1 483 10 µS/cm Total hardness 9,47 0,07 9,3 0,5 °d 98% Alkalinity 1,79 0,01 1,81 0,09 mmol/l 101% Hydrogen carbonate 106 1 107,4 5,4 mg/l 101% Calcium 37,5 0,3 36,6 1,8 mg/l 98% Magnesium 18,3 0,2 18,2 0,9 mg/l 99% Sodium 26,8 0,2 27,6 1,4 mg/l 103% Potassium 2,52 0,03 2,7 0,1 mg/l 107% Nitrate 50,5 1,0 49,7 1,5 mg/l 98% Nitrite 0,040 0,001 0,039 0,004 mg/l 98% Ammonium <0,01 Chloride 42,1 <0,03 0,5 42,1 mg/l • 1,3 mg/l 100% Sulphate 39,4 0,5 39,7 1,2 mg/l 101% Orthophosphate 0,090 0,001 0,089 0,009 mg/l 99% Boron <0,02 DOC 4,06 0,05 4,07 Total P (as PO4) 0,148 0,002 KMnO4-Index 3,40 0,09 Silicon 2,28 0,05 <0,050 mg/l • 0,41 mg/l 100% 0,175 0,018 mg/l 118% 3,25 0,33 mg/l 96% 2,36 0,24 mg/l 104% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory AI Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 364 5,2 7 0,3 µS/cm °d 102% 96% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,97 178,3 0,15 8,9 mmol/l mg/l 100% 101% Calcium Magnesium 27,5 6,73 0,3 0,08 26,4 6,60 1,3 0,33 mg/l mg/l 96% 98% Sodium Potassium 36,8 7,55 0,3 0,04 37,3 7,9 1,9 0,4 mg/l mg/l 101% 105% Nitrate Nitrite 4,87 0,083 0,11 0,001 4,6 0,088 0,1 0,009 mg/l mg/l 94% 106% Ammonium Chloride 0,050 8,02 0,001 0,02 0,056 8,1 0,006 0,2 mg/l mg/l 112% 101% Sulphate Orthophosphate_1 22,8 0,082 0,3 0,002 22,9 0,087 0,7 0,009 mg/l mg/l 100% 106% Boron_1 DOC 0,058 2,63 0,001 0,04 0,059 2,86 0,006 0,29 mg/l mg/l 102% 109% Total P (as PO4)_1 KMnO4-Index 0,087 3,90 0,002 0,08 0,108 3,91 0,011 0,39 mg/l mg/l 124% 100% Silicon 4,56 0,12 4,64 0,46 mg/l 102% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate_1 DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron_1Total P (as PO4)_1 Silicon Sample N131A Laboratory AJ Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity 479 1 479 µS/cm 100% Total hardness 9,47 0,07 9,46 °d 100% Alkalinity 1,79 0,01 1,81 mmol/l 101% Hydrogen carbonate 106 1 Calcium 37,5 0,3 38,486 2,287 mg/l 103% Magnesium 18,3 0,2 17,586 2,431 mg/l 96% Sodium 26,8 0,2 24,798 2,793 mg/l 93% Potassium 2,52 0,03 2,543 0,270 mg/l 101% mg/l Nitrate 50,5 1,0 mg/l Nitrite 0,040 0,001 mg/l Ammonium <0,01 Chloride 42,1 0,5 mg/l Sulphate 39,4 0,5 mg/l Orthophosphate 0,090 0,001 Boron <0,02 DOC 4,06 0,05 mg/l Total P (as PO4) 0,148 0,002 mg/l KMnO4-Index 3,40 0,09 mg/l Silicon 2,28 0,05 mg/l mg/l mg/l <0,005 mg/l Deviation • Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory AJ Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 358 5,43 µS/cm °d 101% 101% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,94 mmol/l mg/l 99% Calcium Magnesium 27,5 6,73 0,3 0,08 28,285 6,630 2,344 0,230 mg/l mg/l 103% 99% Sodium Potassium 36,8 7,55 0,3 0,04 34,591 7,440 2,727 0,270 mg/l mg/l 94% 99% Nitrate Nitrite 4,87 0,083 0,11 0,001 mg/l mg/l Ammonium Chloride 0,050 8,02 0,001 0,02 mg/l mg/l Sulphate Orthophosphate_1 22,8 0,082 0,3 0,002 mg/l mg/l Boron_1 DOC 0,058 2,63 0,001 0,04 Total P (as PO4)_1 KMnO4-Index 0,087 3,90 0,002 0,08 mg/l mg/l Silicon 4,56 0,12 mg/l 0,060 0,002 mg/l mg/l 103% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate_1 DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron_1Total P (as PO4)_1 Silicon Sample N131A Laboratory AK Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery 100% Conductivity 479 1 481 µS/cm Total hardness 9,47 0,07 9,35 °d 99% Alkalinity 1,79 0,01 1,82 mmol/l 102% Hydrogen carbonate 106 1 107 mg/l 101% Calcium 37,5 0,3 37,5 mg/l 100% Magnesium 18,3 0,2 17,9 mg/l 98% Sodium 26,8 0,2 26,9 mg/l 100% Potassium 2,52 0,03 2,5 mg/l 99% Nitrate 50,5 1,0 49,3 mg/l 98% Nitrite 0,040 0,001 0,039 mg/l 98% Ammonium <0,01 <0,01 mg/l • Chloride 42,1 41,8 mg/l 99% 0,5 Sulphate 39,4 0,5 39,0 mg/l 99% Orthophosphate 0,090 0,001 0,098 mg/l 109% Boron <0,02 DOC 4,06 0,05 4,1 mg/l Total P (as PO4) 0,148 0,002 0,144 mg/l 97% KMnO4-Index 3,40 0,09 3,64 mg/l 107% Silicon 2,28 0,05 2,6 mg/l 114% mg/l 101% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory AK Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 357 5,43 µS/cm °d 100% 101% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,96 179 mmol/l mg/l 100% 101% Calcium Magnesium 27,5 6,73 0,3 0,08 27,3 7,1 mg/l mg/l 99% 105% Sodium Potassium 36,8 7,55 0,3 0,04 36,9 7,6 mg/l mg/l 100% 101% Nitrate Nitrite 4,87 0,083 0,11 0,001 4,8 0,079 mg/l mg/l 99% 95% Ammonium Chloride 0,050 8,02 0,001 0,02 0,044 8,0 mg/l mg/l 88% 100% Sulphate Orthophosphate_1 22,8 0,082 0,3 0,002 22,5 0,101 mg/l mg/l 99% 123% Boron_1 DOC 0,058 2,63 0,001 0,04 2,7 mg/l mg/l 103% Total P (as PO4)_1 KMnO4-Index 0,087 3,90 0,002 0,08 0,095 3,85 mg/l mg/l 109% 99% Silicon 4,56 0,12 6,4 mg/l 140% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate_1 DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron_1Total P (as PO4)_1 Silicon Sample N131A Laboratory AL Parameter Recovery [%] Target value ± U (k=2) Result 483 ± Unit Recovery µS/cm 101% Conductivity 479 1 Total hardness 9,47 0,07 °d Alkalinity 1,79 0,01 mmol/l Hydrogen carbonate 106 1 mg/l Calcium 37,5 0,3 mg/l Magnesium 18,3 0,2 mg/l Sodium 26,8 0,2 mg/l Potassium 2,52 0,03 mg/l Nitrate 50,5 1,0 Nitrite 0,040 0,001 Ammonium <0,01 Chloride 42,1 mg/l 0,04 mg/l 100% <0,05 mg/l • 0,5 mg/l Sulphate 39,4 0,5 mg/l Orthophosphate 0,090 0,001 mg/l Boron <0,02 DOC 4,06 0,05 mg/l Total P (as PO4) 0,148 0,002 mg/l KMnO4-Index 3,40 0,09 mg/l Silicon 2,28 0,05 mg/l mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory AL Parameter Recovery [%] Target value ± U (k=2) Result 356 ± Unit Recovery µS/cm °d 100% Conductivity Total hardness 356 5,40 1 0,05 Alkalinity Hydrogen carbonate 2,96 177 0,02 1 mmol/l mg/l Calcium Magnesium 27,5 6,73 0,3 0,08 mg/l mg/l Sodium Potassium 36,8 7,55 0,3 0,04 mg/l mg/l Nitrate Nitrite 4,87 0,083 0,11 0,001 Ammonium Chloride 0,050 8,02 0,001 0,02 Sulphate Orthophosphate_1 22,8 0,082 0,3 0,002 mg/l mg/l Boron_1 DOC 0,058 2,63 0,001 0,04 mg/l mg/l Total P (as PO4)_1 KMnO4-Index 0,087 3,90 0,002 0,08 mg/l mg/l Silicon 4,56 0,12 mg/l 0,09 <0,05 mg/l mg/l 108% mg/l mg/l Deviation • Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate_1 DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron_1Total P (as PO4)_1 Silicon Sample N131A Laboratory AM Parameter Recovery [%] Target value ± U (k=2) Result ± Recovery µS/cm 18% Conductivity 479 1 Total hardness 9,47 0,07 Alkalinity 1,79 0,01 1,75 Hydrogen carbonate 106 1 104 Calcium 37,5 0,3 mg/l Magnesium 18,3 0,2 mg/l Sodium 26,8 0,2 mg/l Potassium 2,52 0,03 Nitrate 50,5 1,0 48,2 Nitrite 0,040 0,001 0,05 Ammonium <0,01 Chloride 42,1 0,5 Sulphate 39,4 0,5 Orthophosphate 0,090 0,001 Boron <0,02 86 Unit °d 0,09 mmol/l 98% mg/l 98% mg/l 1,1 mg/l 95% mg/l 125% <0,01 0,03 mg/l • 57,3 0,2 mg/l 136% 0,81 0,05 mg/l mg/l 900% mg/l DOC 4,06 0,05 Total P (as PO4) 0,148 0,002 mg/l KMnO4-Index 3,40 0,09 mg/l Silicon 2,28 0,05 mg/l 0,83 mg/l 561% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory AM Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 149 µS/cm °d 42% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,98 179 mmol/l mg/l 101% 101% Calcium Magnesium 27,5 6,73 0,3 0,08 mg/l mg/l Sodium Potassium 36,8 7,55 0,3 0,04 mg/l mg/l Nitrate Nitrite 4,87 0,083 0,11 0,001 6,08 0,10 mg/l mg/l 125% 120% Ammonium Chloride 0,050 8,02 0,001 0,02 0,05 12,2 mg/l mg/l 100% 152% Sulphate Orthophosphate_1 22,8 0,082 0,3 0,002 0,60 mg/l mg/l 732% Boron_1 DOC 0,058 2,63 0,001 0,04 Total P (as PO4)_1 KMnO4-Index 0,087 3,90 0,002 0,08 Silicon 4,56 0,12 mg/l mg/l 0,62 mg/l mg/l 713% mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate_1 DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron_1Total P (as PO4)_1 Silicon Sample N131A Laboratory AN Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity 479 1 482 11 µS/cm 101% Total hardness 9,47 0,07 9,67 0,02 °d 102% Alkalinity 1,79 0,01 1,95 0,08 mmol/l 109% Hydrogen carbonate 106 1 116,1 5,2 mg/l 110% Calcium 37,5 0,3 38,36 0,34 mg/l 102% Magnesium 18,3 0,2 18,64 0,10 mg/l 102% Sodium 26,8 0,2 26,83 1,00 mg/l 100% Potassium 2,52 0,03 2,56 0,10 mg/l 102% Nitrate 50,5 1,0 49,35 0,62 mg/l 98% Nitrite 0,040 0,001 0,043 0,003 mg/l 108% Ammonium <0,01 Chloride 42,1 <0,01 0,5 39,40 mg/l • 0,46 mg/l 94% Sulphate 39,4 0,5 38,72 0,44 mg/l 98% Orthophosphate 0,090 0,001 0,086 0,002 mg/l 96% Boron <0,02 mg/l DOC 4,06 0,05 3,91 0,12 mg/l 96% Total P (as PO4) 0,148 0,002 0,139 0,006 mg/l 94% KMnO4-Index 3,40 0,09 mg/l Silicon 2,28 0,05 mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory AN Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 359 5,56 4 0,02 µS/cm °d 101% 103% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 3,11 186,7 0,08 2,6 mmol/l mg/l 105% 105% Calcium Magnesium 27,5 6,73 0,3 0,08 28,28 6,94 0,10 0,12 mg/l mg/l 103% 103% Sodium Potassium 36,8 7,55 0,3 0,04 36,56 7,45 1,38 0,34 mg/l mg/l 99% 99% Nitrate Nitrite 4,87 0,083 0,11 0,001 4,71 0,086 0,18 0,003 mg/l mg/l 97% 104% Ammonium Chloride 0,050 8,02 0,001 0,02 0,051 7,72 0,004 0,18 mg/l mg/l 102% 96% Sulphate Orthophosphate_1 22,8 0,082 0,3 0,002 22,44 0,081 0,26 0,003 mg/l mg/l 98% 99% Boron_1 DOC 0,058 2,63 0,001 0,04 2,61 0,14 mg/l mg/l Total P (as PO4)_1 KMnO4-Index 0,087 3,90 0,002 0,08 0,088 0,012 Silicon 4,56 0,12 mg/l mg/l 99% 101% mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate_1 DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron_1Total P (as PO4)_1 Silicon Sample N131A Laboratory AO Parameter Target value ± U (k=2) Result ± Unit Recovery Conductivity 479 1 462 3 µS/cm 96% Total hardness 9,47 0,07 9,2 0,1 °d 97% Alkalinity 1,79 0,01 1,67 0,06 mmol/l 93% Hydrogen carbonate 106 1 102 4 mg/l 96% Calcium 37,5 0,3 36,6 0,1 mg/l 98% Magnesium 18,3 0,2 17,9 0,1 mg/l 98% Sodium 26,8 0,2 30 0,2 mg/l 112% Potassium 2,52 0,03 2,5 0,02 mg/l 99% Nitrate 50,5 1,0 51,2 0,4 mg/l 101% Nitrite 0,040 0,001 <0,01 mg/l FN Ammonium <0,01 Chloride 42,1 0,5 0,012 44,3 41,1 0,005 mg/l • 0,3 mg/l 105% 0,4 mg/l 104% Sulphate 39,4 0,5 Orthophosphate 0,090 0,001 Boron <0,02 DOC 4,06 0,05 Total P (as PO4) 0,148 0,002 mg/l KMnO4-Index 3,40 0,09 mg/l Silicon 2,28 0,05 mg/l mg/l mg/l 4,75 Recovery [%] 0,42 mg/l 117% Deviation Recovery 140 130 120 110 100 FN 90 80 70 60 Nitrite Total hardness Hydrogen carbonateMagnesium Potassium Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory AO Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 346 5,1 2 0,1 µS/cm °d 97% 94% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,79 170 0,11 7 mmol/l mg/l 94% 96% Calcium Magnesium 27,5 6,73 0,3 0,08 26,1 6,5 0,1 0,1 mg/l mg/l 95% 97% Sodium Potassium 36,8 7,55 0,3 0,04 41 7,6 0,2 0,06 mg/l mg/l 111% 101% Nitrate Nitrite 4,87 0,083 0,11 0,001 4,9 0,089 0,1 0,007 mg/l mg/l 101% 107% Ammonium Chloride 0,050 8,02 0,001 0,02 0,059 7,9 0,01 0,1 mg/l mg/l 118% 99% Sulphate Orthophosphate_1 22,8 0,082 0,3 0,002 23,9 0,2 mg/l mg/l 105% Boron_1 DOC 0,058 2,63 0,001 0,04 3,25 0,29 Total P (as PO4)_1 KMnO4-Index 0,087 3,90 0,002 0,08 mg/l mg/l Silicon 4,56 0,12 mg/l mg/l mg/l 124% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate_1 DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron_1Total P (as PO4)_1 Silicon Sample N131A Laboratory AP Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity 479 1 478,4 µS/cm 100% Total hardness 9,47 0,07 9,5 °d 100% Alkalinity 1,79 0,01 1,84 mmol/l 103% Hydrogen carbonate 106 1 112,3 mg/l 106% Calcium 37,5 0,3 36,9 2,1 mg/l 98% Magnesium 18,3 0,2 18,0 1,4 mg/l 98% Sodium 26,8 0,2 27,1 1,5 mg/l 101% Potassium 2,52 0,03 2,77 0,15 mg/l 110% Nitrate 50,5 1,0 50,2 mg/l 99% Nitrite 0,040 0,001 0,04 mg/l 100% Ammonium <0,01 <0,013 mg/l • Chloride 42,1 42 mg/l 100% 0,5 Sulphate 39,4 0,5 39,5 mg/l 100% Orthophosphate 0,090 0,001 <0,2 mg/l • Boron <0,02 <0,1 mg/l • DOC 4,06 0,05 Total P (as PO4) 0,148 0,002 KMnO4-Index 3,40 0,09 Silicon 2,28 0,05 mg/l 0,23 mg/l 155% mg/l 2,11 0,12 mg/l 93% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory AP Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 356,0 5,05 µS/cm °d 100% 94% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,98 181,5 mmol/l mg/l 101% 103% Calcium Magnesium 27,5 6,73 0,3 0,08 26,7 7,15 1,5 0,23 mg/l mg/l 97% 106% Sodium Potassium 36,8 7,55 0,3 0,04 37,4 7,74 0,93 0,24 mg/l mg/l 102% 103% Nitrate Nitrite 4,87 0,083 0,11 0,001 5,05 0,08 mg/l mg/l 104% 96% Ammonium Chloride 0,050 8,02 0,001 0,02 0,065 7,35 mg/l mg/l 130% 92% Sulphate Orthophosphate_1 22,8 0,082 0,3 0,002 19 <0,2 mg/l mg/l 83% • Boron_1 DOC 0,058 2,63 0,001 0,04 58,7 mg/l mg/l 101207% Total P (as PO4)_1 KMnO4-Index 0,087 3,90 0,002 0,08 <0,2 mg/l mg/l • Silicon 4,56 0,12 4,22 mg/l 93% 5,1 0,21 Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate_1 DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron_1Total P (as PO4)_1 Silicon Sample N131A Laboratory AQ Parameter Target value ± U (k=2) Result ± Unit Conductivity 479 1 Total hardness 9,47 0,07 °d Alkalinity 1,79 0,01 mmol/l Recovery µS/cm Hydrogen carbonate 106 1 Calcium 37,5 0,3 39,3 4,7 mg/l mg/l Magnesium 18,3 0,2 17,7 2,1 mg/l 97% Sodium 26,8 0,2 27,0 2,7 mg/l 101% Potassium 2,52 0,03 2,5 0,3 mg/l 99% Nitrate 50,5 1,0 47,6 9,0 mg/l 94% Nitrite 0,040 0,001 Ammonium <0,01 Chloride 42,1 105% mg/l 0,03 0,004 mg/l FP 0,5 40,5 5,7 mg/l 96% 38,0 5,3 mg/l 96% Sulphate 39,4 0,5 Orthophosphate 0,090 0,001 Boron <0,02 DOC 4,06 0,05 Total P (as PO4) 0,148 0,002 KMnO4-Index 3,40 0,09 mg/l Silicon 2,28 0,05 mg/l mg/l mg/l mg/l 0,05 0,02 Recovery [%] mg/l 34% Deviation Recovery 140 130 120 110 FP 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory AQ Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 µS/cm °d Alkalinity Hydrogen carbonate 2,96 177 0,02 1 mmol/l mg/l Calcium Magnesium 27,5 6,73 0,3 0,08 28,6 6,7 3,4 0,8 mg/l mg/l 104% 100% Sodium Potassium 36,8 7,55 0,3 0,04 37,6 7,5 3,8 0,9 mg/l mg/l 102% 99% Nitrate Nitrite 4,87 0,083 0,11 0,001 4,6 0,9 mg/l mg/l 94% Ammonium Chloride 0,050 8,02 0,001 0,02 0,10 7,8 0,01 1,1 mg/l mg/l 200% 97% Sulphate Orthophosphate_1 22,8 0,082 0,3 0,002 22,5 3,1 mg/l mg/l 99% Boron_1 DOC 0,058 2,63 0,001 0,04 Total P (as PO4)_1 KMnO4-Index 0,087 3,90 0,002 0,08 Silicon 4,56 0,12 mg/l mg/l 0,05 0,02 mg/l mg/l 57% mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate_1 DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron_1Total P (as PO4)_1 Silicon Sample N131A Laboratory AR Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery 99% Conductivity 479 1 474 8,4 µS/cm Total hardness 9,47 0,07 9,4 1,3 °d 99% Alkalinity 1,79 0,01 1,8 0,079 mmol/l 101% 109,8 4,9 mg/l 104% Hydrogen carbonate 106 1 Calcium 37,5 0,3 mg/l Magnesium 18,3 0,2 mg/l Sodium 26,8 0,2 mg/l Potassium 2,52 0,03 Nitrate 50,5 1,0 44,1 8,8 mg/l 87% Nitrite 0,040 0,001 0,043 0,0077 mg/l 108% Ammonium <0,01 Chloride 42,1 mg/l <0,1 0,5 mg/l • 41,2 8,1 mg/l 98% 7,7 mg/l 97% mg/l • Sulphate 39,4 0,5 38,3 Orthophosphate 0,090 0,001 <0,6 Boron <0,02 mg/l DOC 4,06 0,05 4,1 Total P (as PO4) 0,148 0,002 <0,15 KMnO4-Index 3,40 0,09 3,2 Silicon 2,28 0,05 1,2 0,55 mg/l 101% mg/l • mg/l 94% mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory AR Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 354 5,42 6,3 0,73 µS/cm °d 99% 100% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 3 183,1 0,098 6,0 mmol/l mg/l 101% 103% Calcium Magnesium 27,5 6,73 0,3 0,08 mg/l mg/l Sodium Potassium 36,8 7,55 0,3 0,04 mg/l mg/l Nitrate Nitrite 4,87 0,083 0,11 0,001 3,45 0,086 0,89 0,010 mg/l mg/l 71% 104% Ammonium Chloride 0,050 8,02 0,001 0,02 <0,1 6,6 1,3 mg/l mg/l • 82% Sulphate Orthophosphate_1 22,8 0,082 0,3 0,002 21,5 <0,6 4,3 mg/l mg/l 94% • Boron_1 DOC 0,058 2,63 0,001 0,04 2,8 0,9 mg/l mg/l 106% Total P (as PO4)_1 KMnO4-Index 0,087 3,90 0,002 0,08 <0,15 3,6 0,61 mg/l mg/l • 92% Silicon 4,56 0,12 mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate_1 DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron_1Total P (as PO4)_1 Silicon Sample N131A Laboratory AS Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery 393 10 µS/cm 82% Conductivity 479 1 Total hardness 9,47 0,07 °d Alkalinity 1,79 0,01 mmol/l Hydrogen carbonate 106 1 Calcium 37,5 0,3 36,3 0,1 mg/l Magnesium 18,3 0,2 18,07 0,15 mg/l 99% Sodium 26,8 0,2 26,8 0,1 mg/l 100% Potassium 2,52 0,03 3,02 0,05 mg/l 120% Nitrate 50,5 1,0 65,97 0,15 mg/l 131% Nitrite 0,040 0,001 0,04 0,08 mg/l 100% Ammonium <0,01 Chloride 42,1 0,5 39,49 0,2 mg/l 94% Sulphate 39,4 0,5 40,65 0,8 mg/l 103% Orthophosphate 0,090 0,001 0,076 0,002 mg/l 84% Boron <0,02 mg/l 97% mg/l mg/l DOC 4,06 0,05 Total P (as PO4) 0,148 0,002 KMnO4-Index 3,40 0,09 Silicon 2,28 0,05 mg/l 0,146 0,002 mg/l 99% mg/l 1,89 0,05 mg/l 83% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory AS Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery 293 10 µS/cm °d 82% Conductivity Total hardness 356 5,40 1 0,05 Alkalinity Hydrogen carbonate 2,96 177 0,02 1 Calcium Magnesium 27,5 6,73 0,3 0,08 27,86 6,64 0,1 0,15 mg/l mg/l 101% 99% Sodium Potassium 36,8 7,55 0,3 0,04 38,07 7,36 0,1 0,05 mg/l mg/l 103% 97% Nitrate Nitrite 4,87 0,083 0,11 0,001 5,09 0,08 0,15 0,08 mg/l mg/l 105% 96% Ammonium Chloride 0,050 8,02 0,001 0,02 8,19 0,2 mg/l mg/l 102% Sulphate Orthophosphate_1 22,8 0,082 0,3 0,002 23,77 0,071 0,8 0,002 mg/l mg/l 104% 87% Boron_1 DOC 0,058 2,63 0,001 0,04 Total P (as PO4)_1 KMnO4-Index 0,087 3,90 0,002 0,08 0,091 0,002 mg/l mg/l 105% Silicon 4,56 0,12 4,02 0,05 mg/l 88% mmol/l mg/l mg/l mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate_1 DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron_1Total P (as PO4)_1 Silicon Sample N131A Laboratory AT Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity 479 1 477 µS/cm 100% Total hardness 9,47 0,07 9,2 °d 97% Alkalinity 1,79 0,01 0,87 mmol/l 49% Hydrogen carbonate 106 1 53 mg/l 50% Calcium 37,5 0,3 35 mg/l 93% Magnesium 18,3 0,2 19 mg/l 104% Sodium 26,8 0,2 Potassium 2,52 0,03 Nitrate 50,5 1,0 52,8 mg/l 105% Nitrite 0,040 0,001 0,038 mg/l 95% Ammonium <0,01 0,01 mg/l • Chloride 42,1 45 mg/l 107% 0,5 mg/l mg/l Sulphate 39,4 0,5 40 mg/l 102% Orthophosphate 0,090 0,001 0,09 mg/l 100% Boron <0,02 mg/l DOC 4,06 0,05 Total P (as PO4) 0,148 0,002 0,17 mg/l mg/l 115% KMnO4-Index 3,40 0,09 3,1 mg/l 91% Silicon 2,28 0,05 mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory AT Parameter Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 355 5,3 µS/cm °d 100% 98% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 1,43 87 mmol/l mg/l 48% 49% Calcium Magnesium 27,5 6,73 0,3 0,08 25 7,1 mg/l mg/l 91% 105% Sodium Potassium 36,8 7,55 0,3 0,04 Nitrate Nitrite 4,87 0,083 0,11 0,001 5,3 0,080 mg/l mg/l 109% 96% Ammonium Chloride 0,050 8,02 0,001 0,02 0,056 <5 mg/l mg/l 112% FN Sulphate Orthophosphate_1 22,8 0,082 0,3 0,002 23 0,06 mg/l mg/l 101% 73% Boron_1 DOC 0,058 2,63 0,001 0,04 Total P (as PO4)_1 KMnO4-Index 0,087 3,90 0,002 0,08 Silicon 4,56 0,12 mg/l mg/l mg/l mg/l 0,12 3,6 mg/l mg/l 138% 92% mg/l Recovery [%] Deviation Recovery 140 130 120 110 100 FN 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate_1 DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron_1Total P (as PO4)_1 Silicon Sample N131A Laboratory AU Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity 479 1 490 µS/cm 102% Total hardness 9,47 0,07 9,664 °d 102% Alkalinity 1,79 0,01 1,7966 1,1129 mmol/l 100% Hydrogen carbonate 106 1 109,6252 0,0064 mg/l 103% Calcium 37,5 0,3 38,2966 0,0052 mg/l 102% Magnesium 18,3 0,2 18,7027 0,0455 mg/l 102% Sodium 26,8 0,2 27,8707 0,0450 mg/l 104% Potassium 2,52 0,03 7,3105 0,0078 mg/l 290% Nitrate 50,5 1,0 40,2026 0,0250 mg/l 80% Nitrite 0,040 0,001 0,4745 0,6170 mg/l 1186% Ammonium <0,01 mg/l • 42,1 0,5 0,0125 35,9927 0,0461 Chloride 0,0392 mg/l 85% Sulphate 39,4 0,5 34,1436 0,0213 mg/l 87% Orthophosphate 0,090 0,001 0 0 mg/l Boron <0,02 0 0 mg/l FN • DOC 4,06 0,05 5,5243 0,0918 mg/l 136% Total P (as PO4) 0,148 0,002 0,1656 0,1839 mg/l 112% KMnO4-Index 3,40 0,09 3,120 0,6410 mg/l 92% Silicon 2,28 0,05 2,2752 0,2490 mg/l 100% Deviation Recovery 140 130 120 110 100 FN 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory AU Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery µS/cm °d 102% 141% Conductivity Total hardness 356 5,40 1 0,05 362 7,598 Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,9033 177,1496 0,0159 0,0159 mmol/l mg/l 98% 100% Calcium Magnesium 27,5 6,73 0,3 0,08 28,0852 6,9757 0,0067 0,0832 mg/l mg/l 102% 104% Sodium Potassium 36,8 7,55 0,3 0,04 38,205 2,3947 0,0472 0,0608 mg/l mg/l 104% 32% Nitrate Nitrite 4,87 0,083 0,11 0,001 6,2260 0,4812 0,0119 0,3958 mg/l mg/l 128% 580% Ammonium Chloride 0,050 8,02 0,001 0,02 0,080 10,7991 0 0,0932 mg/l mg/l 160% 135% Sulphate Orthophosphate_1 22,8 0,082 0,3 0,002 23,1698 0 0,0141 0 mg/l mg/l 102% FN Boron_1 DOC 0,058 2,63 0,001 0,04 0,0575 4,701 0,0695 0,2198 mg/l mg/l 99% 179% Total P (as PO4)_1 KMnO4-Index 0,087 3,90 0,002 0,08 0,0867 4,140 0,0475 0,1232 mg/l mg/l 100% 106% Silicon 4,56 0,12 4,7503 0,2686 mg/l 104% Deviation Recovery 140 130 120 110 100 FN 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate_1 DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron_1Total P (as PO4)_1 Silicon Sample N131A Laboratory AV Parameter Target value ± U (k=2) Result ± Unit Recovery Conductivity 479 1 481 3 µS/cm 100% Total hardness 9,47 0,07 9,56 0,03 °d 101% Alkalinity 1,79 0,01 1,77 mmol/l 99% Hydrogen carbonate 106 1 Calcium 37,5 0,3 37,80 0,357 mg/l 101% Magnesium 18,3 0,2 18,18 0,916 mg/l 99% Sodium 26,8 0,2 26,55 0,204 mg/l 99% Potassium 2,52 0,03 2,47 0,053 mg/l 98% Nitrate 50,5 1,0 42,30 0,451 mg/l 84% Nitrite 0,040 0,001 0,043 0,025 mg/l 108% Ammonium <0,01 Chloride 42,1 mg/l 0,1889 0,004 mg/l FP 0,5 36,45 4,38 mg/l 87% 35,61 0,842 mg/l 90% Sulphate 39,4 0,5 Orthophosphate 0,090 0,001 Boron <0,02 DOC 4,06 0,05 Total P (as PO4) 0,148 0,002 KMnO4-Index 3,40 0,09 Silicon 2,28 0,05 mg/l mg/l mg/l mg/l 3,7 mg/l 109% mg/l Recovery [%] Deviation Recovery 140 130 120 110 FP 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory AV Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery 5 0,01 µS/cm °d 99% 101% mmol/l mg/l 99% Conductivity Total hardness 356 5,40 1 0,05 353 5,46 Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,92 Calcium Magnesium 27,5 6,73 0,3 0,08 27,75 6,70 0,357 0,916 mg/l mg/l 101% 100% Sodium Potassium 36,8 7,55 0,3 0,04 36,36 7,46 0,109 0,053 mg/l mg/l 99% 99% Nitrate Nitrite 4,87 0,083 0,11 0,001 4,39 0,055 0,340 0,019 mg/l mg/l 90% 66% Ammonium Chloride 0,050 8,02 0,001 0,02 0,038 6,59 0,009 0,019 mg/l mg/l 76% 82% Sulphate Orthophosphate_1 22,8 0,082 0,3 0,002 19,87 0,842 mg/l mg/l 87% Boron_1 DOC 0,058 2,63 0,001 0,04 Total P (as PO4)_1 KMnO4-Index 0,087 3,90 0,002 0,08 Silicon 4,56 0,12 mg/l mg/l 3,9 mg/l mg/l 100% mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate_1 DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron_1Total P (as PO4)_1 Silicon Sample N131A Laboratory AW Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Conductivity 479 1 Total hardness 9,47 0,07 °d Alkalinity 1,79 0,01 mmol/l µS/cm Hydrogen carbonate 106 1 mg/l Calcium 37,5 0,3 mg/l Magnesium 18,3 0,2 mg/l Sodium 26,8 0,2 mg/l Potassium 2,52 0,03 mg/l Nitrate 50,5 1,0 Nitrite 0,040 0,001 Ammonium <0,01 Chloride 42,1 mg/l 0,04 mg/l 100% <0,05 mg/l • 0,5 Sulphate 39,4 0,5 Orthophosphate 0,090 0,001 Boron <0,02 Recovery mg/l mg/l 0,10 mg/l 111% mg/l DOC 4,06 0,05 Total P (as PO4) 0,148 0,002 mg/l KMnO4-Index 3,40 0,09 3,331 mg/l 98% Silicon 2,28 0,05 2,2 mg/l 96% mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory AW Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 µS/cm °d Alkalinity Hydrogen carbonate 2,96 177 0,02 1 mmol/l mg/l Calcium Magnesium 27,5 6,73 0,3 0,08 mg/l mg/l Sodium Potassium 36,8 7,55 0,3 0,04 mg/l mg/l Nitrate Nitrite 4,87 0,083 0,11 0,001 Ammonium Chloride 0,050 8,02 0,001 0,02 Sulphate Orthophosphate_1 22,8 0,082 0,3 0,002 Boron_1 DOC 0,058 2,63 0,001 0,04 Total P (as PO4)_1 KMnO4-Index 0,087 3,90 0,002 0,08 3,766 mg/l mg/l 97% Silicon 4,56 0,12 4,5 mg/l 99% 0,09 0,07 0,10 mg/l mg/l mg/l mg/l mg/l mg/l 108% 140% 122% mg/l mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate_1 DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron_1Total P (as PO4)_1 Silicon Sample N131A Laboratory AX Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity 479 1 471 5 µS/cm 98% Total hardness 9,47 0,07 9,4 0,5 °d 99% Alkalinity 1,79 0,01 1,72 0,04 mmol/l 96% Hydrogen carbonate 106 1 102 3 mg/l 96% Calcium 37,5 0,3 36,7 1,9 mg/l 98% Magnesium 18,3 0,2 18,4 1,0 mg/l 101% Sodium 26,8 0,2 26,1 1,4 mg/l 97% Potassium 2,52 0,03 2,60 0,18 mg/l 103% Nitrate 50,5 1,0 49 2 mg/l 97% Nitrite 0,040 0,001 0,04 0,002 mg/l 100% Ammonium <0,01 Chloride 42,1 <0,04 0,5 40 mg/l • 2 mg/l 95% Sulphate 39,4 0,5 39 2 mg/l 99% Orthophosphate 0,090 0,001 0,08 0,003 mg/l 89% Boron <0,02 0,0565 0,0017 mg/l FP DOC 4,06 0,05 4,25 0,1 mg/l 105% Total P (as PO4) 0,148 0,002 0,146 0,005 mg/l 99% KMnO4-Index 3,40 0,09 3,39 0,17 mg/l 100% Silicon 2,28 0,05 2,15 0,03 mg/l 94% Deviation Recovery 140 130 120 110 FP 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory AX Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 353 5,4 5 0,3 µS/cm °d 99% 100% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,88 173 0,04 3 mmol/l mg/l 97% 98% Calcium Magnesium 27,5 6,73 0,3 0,08 28,2 6,5 1,5 0,4 mg/l mg/l 103% 97% Sodium Potassium 36,8 7,55 0,3 0,04 36,3 7,9 1,9 0,4 mg/l mg/l 99% 105% Nitrate Nitrite 4,87 0,083 0,11 0,001 4,8 0,084 0,3 0,004 mg/l mg/l 99% 101% Ammonium Chloride 0,050 8,02 0,001 0,02 0,0524 8,1 0,003 0,5 mg/l mg/l 105% 101% Sulphate Orthophosphate_1 22,8 0,082 0,3 0,002 22,0 0,078 1,2 0,003 mg/l mg/l 96% 95% Boron_1 DOC 0,058 2,63 0,001 0,04 <0,001 2,85 0,07 mg/l mg/l FN 108% Total P (as PO4)_1 KMnO4-Index 0,087 3,90 0,002 0,08 0,0898 3,85 0,005 0,17 mg/l mg/l 103% 99% Silicon 4,56 0,12 4,23 0,03 mg/l 93% Deviation Recovery 140 130 120 110 100 FN 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate_1 DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron_1Total P (as PO4)_1 Silicon Sample N131A Laboratory AY Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity 479 1 471 30 µS/cm 98% Total hardness 9,47 0,07 9,5 0,2 °d 100% Alkalinity 1,79 0,01 1,78 0,02 mmol/l 99% Hydrogen carbonate 106 1 Calcium 37,5 0,3 38,0 0,6 mg/l Magnesium 18,3 0,2 18,2 0,6 mg/l 99% Sodium 26,8 0,2 26,8 0,2 mg/l 100% Potassium 2,52 0,03 2,5 0,06 mg/l 99% Nitrate 50,5 1,0 50,5 0,5 mg/l 100% Nitrite 0,040 0,001 88% Ammonium <0,01 Chloride 42,1 mg/l 101% 0,035 0,015 mg/l <0,03 0,08 mg/l • 0,5 42,6 0,25 mg/l 101% 39,8 3,0 mg/l 101% Sulphate 39,4 0,5 Orthophosphate 0,090 0,001 Boron <0,02 DOC 4,06 0,05 Total P (as PO4) 0,148 0,002 mg/l KMnO4-Index 3,40 0,09 mg/l Silicon 2,28 0,05 mg/l mg/l mg/l 4,48 0,03 mg/l 110% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory AY Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 350 5,4 30 0,2 µS/cm °d 98% 100% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,93 0,02 mmol/l mg/l 99% Calcium Magnesium 27,5 6,73 0,3 0,08 27,6 6,6 0,6 0,6 mg/l mg/l 100% 98% Sodium Potassium 36,8 7,55 0,3 0,04 36,6 7,6 0,2 0,06 mg/l mg/l 99% 101% Nitrate Nitrite 4,87 0,083 0,11 0,001 4,8 0,068 0,5 0,015 mg/l mg/l 99% 82% Ammonium Chloride 0,050 8,02 0,001 0,02 0,057 8,1 0,08 0,25 mg/l mg/l 114% 101% Sulphate Orthophosphate_1 22,8 0,082 0,3 0,002 23,0 3,0 mg/l mg/l 101% Boron_1 DOC 0,058 2,63 0,001 0,04 2,73 0,03 Total P (as PO4)_1 KMnO4-Index 0,087 3,90 0,002 0,08 mg/l mg/l Silicon 4,56 0,12 mg/l mg/l mg/l 104% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate_1 DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron_1Total P (as PO4)_1 Silicon Sample N131A Laboratory AZ Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery 10,0 µS/cm 95% °d 99% mmol/l 99% mg/l 99% Conductivity 479 1 457 Total hardness 9,47 0,07 9,4 Alkalinity 1,79 0,01 1,775 Hydrogen carbonate 106 1 105 Calcium 37,5 0,3 36,1 2,0 mg/l 96% Magnesium 18,3 0,2 19,0 2,0 mg/l 104% Sodium 26,8 0,2 26,6 2,0 mg/l 99% Potassium 2,52 0,03 2,8 0,3 mg/l 111% 0,120 Nitrate 50,5 1,0 49,6 3,0 mg/l 98% Nitrite 0,040 0,001 0,050 0,012 mg/l 125% Ammonium <0,01 Chloride 42,1 mg/l • 0,5 <0,050 41,6 2,0 mg/l 99% 39,0 2,0 mg/l 99% Sulphate 39,4 0,5 Orthophosphate 0,090 0,001 Boron <0,02 DOC 4,06 0,05 Total P (as PO4) 0,148 0,002 mg/l KMnO4-Index 3,40 0,09 mg/l Silicon 2,28 0,05 mg/l mg/l <0,010 4,13 0,50 mg/l • mg/l 102% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory AZ Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 339 5,3 10,0 µS/cm °d 95% 98% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,927 176 0,200 mmol/l mg/l 99% 99% Calcium Magnesium 27,5 6,73 0,3 0,08 26,9 6,5 2,0 1,0 mg/l mg/l 98% 97% Sodium Potassium 36,8 7,55 0,3 0,04 36,5 7,2 2,0 0,7 mg/l mg/l 99% 95% Nitrate Nitrite 4,87 0,083 0,11 0,001 4,5 0,092 0,5 0,023 mg/l mg/l 92% 111% Ammonium Chloride 0,050 8,02 0,001 0,02 0,060 7,1 0,020 0,7 mg/l mg/l 120% 89% Sulphate Orthophosphate_1 22,8 0,082 0,3 0,002 22,4 2,0 mg/l mg/l 98% Boron_1 DOC 0,058 2,63 0,001 0,04 0,057 2,65 0,002 0,50 mg/l mg/l 98% 101% Total P (as PO4)_1 KMnO4-Index 0,087 3,90 0,002 0,08 mg/l mg/l Silicon 4,56 0,12 mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate_1 DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron_1Total P (as PO4)_1 Silicon Sample N131A Laboratory BA Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery 458 8,7 µS/cm 96% Conductivity 479 1 Total hardness 9,47 0,07 Alkalinity 1,79 0,01 1,76 mmol/l 98% Hydrogen carbonate 106 1 100 mg/l 94% Calcium 37,5 0,3 mg/l Magnesium 18,3 0,2 mg/l Sodium 26,8 0,2 mg/l Potassium 2,52 0,03 mg/l Nitrate 50,5 1,0 mg/l Nitrite 0,040 0,001 mg/l Ammonium <0,01 Chloride 42,1 0,5 mg/l Sulphate 39,4 0,5 mg/l Orthophosphate 0,090 0,001 mg/l Boron <0,02 DOC 4,06 0,05 Total P (as PO4) 0,148 0,002 KMnO4-Index 3,40 0,09 Silicon 2,28 0,05 °d mg/l mg/l mg/l mg/l 3,92 0,37 mg/l 115% mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory BA Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery 6,5 µS/cm °d 96% mmol/l mg/l 98% 96% Conductivity Total hardness 356 5,40 1 0,05 342 Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,90 170 Calcium Magnesium 27,5 6,73 0,3 0,08 mg/l mg/l Sodium Potassium 36,8 7,55 0,3 0,04 mg/l mg/l Nitrate Nitrite 4,87 0,083 0,11 0,001 mg/l mg/l Ammonium Chloride 0,050 8,02 0,001 0,02 mg/l mg/l Sulphate Orthophosphate_1 22,8 0,082 0,3 0,002 mg/l mg/l Boron_1 DOC 0,058 2,63 0,001 0,04 mg/l mg/l Total P (as PO4)_1 KMnO4-Index 0,087 3,90 0,002 0,08 Silicon 4,56 0,12 4,49 0,43 mg/l mg/l 115% mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate_1 DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron_1Total P (as PO4)_1 Silicon Sample N131A Laboratory BB Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery 10 Conductivity 479 1 483 µS/cm 101% Total hardness 9,47 0,07 9,09 °d 96% Alkalinity 1,79 0,01 1,77 mmol/l 99% Hydrogen carbonate 106 1 105,0 mg/l 99% Calcium 37,5 0,3 34,93 3,48 mg/l 93% Magnesium 18,3 0,2 18,22 1,45 mg/l 100% Sodium 26,8 0,2 26,46 2,37 mg/l 99% Potassium 2,52 0,03 2,65 0,24 mg/l 105% Nitrate 50,5 1,0 50,65 4,54 mg/l 100% Nitrite 0,040 0,001 0,0394 0,0027 mg/l 99% Ammonium <0,01 Chloride 42,1 <0,02 0,5 42,21 mg/l • 5,04 mg/l 100% Sulphate 39,4 0,5 40,57 4,04 mg/l 103% Orthophosphate 0,090 0,001 0,087 0,013 mg/l 97% Boron <0,02 DOC 4,06 0,05 Total P (as PO4) 0,148 0,002 KMnO4-Index 3,40 Silicon 2,28 <0,010 3,89 0,27 0,09 3,60 0,54 0,05 2,31 mg/l • mg/l 96% mg/l mg/l 106% mg/l 101% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory BB Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery 7 µS/cm °d 101% 95% mmol/l mg/l 99% 99% Conductivity Total hardness 356 5,40 1 0,05 360 5,12 Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,92 175,5 Calcium Magnesium 27,5 6,73 0,3 0,08 25,42 6,76 2,55 0,55 mg/l mg/l 92% 100% Sodium Potassium 36,8 7,55 0,3 0,04 35,26 7,58 3,19 0,69 mg/l mg/l 96% 100% Nitrate Nitrite 4,87 0,083 0,11 0,001 4,90 0,0790 0,43 0,0056 mg/l mg/l 101% 95% Ammonium Chloride 0,050 8,02 0,001 0,02 0,047 7,96 0,007 0,95 mg/l mg/l 94% 99% Sulphate Orthophosphate_1 22,8 0,082 0,3 0,002 23,68 0,084 2,33 0,012 mg/l mg/l 104% 102% Boron_1 DOC 0,058 2,63 0,001 0,04 0,054 2,51 0,011 0,18 mg/l mg/l 93% 95% Total P (as PO4)_1 KMnO4-Index 0,087 3,90 0,002 0,08 3,52 0,54 mg/l mg/l 90% Silicon 4,56 0,12 4,80 mg/l 105% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate_1 DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron_1Total P (as PO4)_1 Silicon Sample N131A Laboratory BC Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity 479 1 479 3 µS/cm 100% Total hardness 9,47 0,07 9,3 1 °d 98% Alkalinity 1,79 0,01 1,75 0,10 mmol/l 98% Hydrogen carbonate 106 1 107 3 mg/l 101% Calcium 37,5 0,3 37 1 mg/l 99% Magnesium 18,3 0,2 18 1 mg/l 98% Sodium 26,8 0,2 26 2 mg/l 97% Potassium 2,52 0,03 2,6 0,5 mg/l 103% Nitrate 50,5 1,0 50 2 mg/l 99% Nitrite 0,040 0,001 0,04 0,01 mg/l 100% Ammonium <0,01 Chloride 42,1 mg/l • 0,5 <0,02 41 2 mg/l 97% 40 3 mg/l 102% Sulphate 39,4 0,5 Orthophosphate 0,090 0,001 Boron <0,02 mg/l • DOC 4,06 0,05 4,1 0,5 mg/l 101% Total P (as PO4) 0,148 0,002 0,16 0,02 mg/l 108% KMnO4-Index 3,40 0,09 3,3 0,3 mg/l 97% Silicon 2,28 0,05 mg/l <0,05 mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory BC Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 356 5,3 3 0,5 µS/cm °d 100% 98% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,90 177 0,10 4 mmol/l mg/l 98% 100% Calcium Magnesium 27,5 6,73 0,3 0,08 27 6,6 1 1 mg/l mg/l 98% 98% Sodium Potassium 36,8 7,55 0,3 0,04 36 7,5 2 1 mg/l mg/l 98% 99% Nitrate Nitrite 4,87 0,083 0,11 0,001 4,8 0,08 0,8 0,01 mg/l mg/l 99% 96% Ammonium Chloride 0,050 8,02 0,001 0,02 0,06 8,1 0,01 1 mg/l mg/l 120% 101% Sulphate Orthophosphate_1 22,8 0,082 0,3 0,002 24 2 mg/l mg/l 105% Boron_1 DOC 0,058 2,63 0,001 0,04 0,07 2,7 0,01 0,3 mg/l mg/l 121% 103% Total P (as PO4)_1 KMnO4-Index 0,087 3,90 0,002 0,08 0,10 3,9 0,02 0,3 mg/l mg/l 115% 100% Silicon 4,56 0,12 mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate_1 DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron_1Total P (as PO4)_1 Silicon Sample N131A Laboratory BD Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity 479 1 430 2 µS/cm 90% Total hardness 9,47 0,07 9,60 0,6 °d 101% Alkalinity 1,79 0,01 1,83 0,1 mmol/l 102% Hydrogen carbonate 106 1 112 6,1 mg/l 106% Calcium 37,5 0,3 36,9 1,7 mg/l 98% Magnesium 18,3 0,2 17,9 0,8 mg/l 98% Sodium 26,8 0,2 26,0 0,8 mg/l 97% Potassium 2,52 0,03 2,33 0,3 mg/l 92% Nitrate 50,5 1,0 49,0 0,4 mg/l 97% Nitrite 0,040 0,001 0,043 0,002 mg/l 108% Ammonium <0,01 <0,005 0,003 mg/l • Chloride 42,1 40,7 0,2 mg/l 97% 0,5 Sulphate 39,4 0,5 37 2 mg/l 94% Orthophosphate 0,090 0,001 0,092 0,002 mg/l 102% Boron <0,02 DOC 4,06 0,05 4,2 0,2 mg/l 103% Total P (as PO4) 0,148 0,002 0,151 0,005 mg/l 102% KMnO4-Index 3,40 0,09 Silicon 2,28 0,05 mg/l mg/l 2,2 0,06 mg/l 96% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory BD Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 321 5,53 2 0,6 µS/cm °d 90% 102% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,91 177 0,1 6,1 mmol/l mg/l 98% 100% Calcium Magnesium 27,5 6,73 0,3 0,08 27,0 6,7 1,7 0,8 mg/l mg/l 98% 100% Sodium Potassium 36,8 7,55 0,3 0,04 35,5 6,95 0,8 0,3 mg/l mg/l 96% 92% Nitrate Nitrite 4,87 0,083 0,11 0,001 4,8 0,088 0,4 0,002 mg/l mg/l 99% 106% Ammonium Chloride 0,050 8,02 0,001 0,02 0,047 7,7 0,003 0,2 mg/l mg/l 94% 96% Sulphate Orthophosphate_1 22,8 0,082 0,3 0,002 33 0,086 2 0,002 mg/l mg/l 145% 105% Boron_1 DOC 0,058 2,63 0,001 0,04 2,8 0,2 mg/l mg/l 106% Total P (as PO4)_1 KMnO4-Index 0,087 3,90 0,002 0,08 0,095 0,005 mg/l mg/l 109% Silicon 4,56 0,12 4,2 0,06 mg/l 92% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate_1 DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron_1Total P (as PO4)_1 Silicon Sample N131A Laboratory BE Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery 100% Conductivity 479 1 478 µS/cm Total hardness 9,47 0,07 9,4 °d 99% Alkalinity 1,79 0,01 1,86 mmol/l 104% Hydrogen carbonate 106 1 113,49 mg/l 107% Calcium 37,5 0,3 37,58 mg/l 100% Magnesium 18,3 0,2 18,21 mg/l 100% Sodium 26,8 0,2 26,38 mg/l 98% Potassium 2,52 0,03 2,71 mg/l 108% Nitrate 50,5 1,0 40,33 mg/l 80% Nitrite 0,040 0,001 0,042 mg/l 105% Ammonium <0,01 Chloride 42,1 <0,05 mg/l • 0,5 42,29 mg/l 100% 32,72 mg/l 83% Sulphate 39,4 0,5 Orthophosphate 0,090 0,001 Boron <0,02 DOC 4,06 0,05 mg/l Total P (as PO4) 0,148 0,002 mg/l KMnO4-Index 3,40 0,09 mg/l Silicon 2,28 0,05 mg/l mg/l <0,01 mg/l Deviation • Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory BE Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 355 5,2 µS/cm °d 100% 96% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,96 180,61 mmol/l mg/l 100% 102% Calcium Magnesium 27,5 6,73 0,3 0,08 28,18 6,83 mg/l mg/l 102% 101% Sodium Potassium 36,8 7,55 0,3 0,04 37,30 8,53 mg/l mg/l 101% 113% Nitrate Nitrite 4,87 0,083 0,11 0,001 4,4 0,11 mg/l mg/l 90% 133% Ammonium Chloride 0,050 8,02 0,001 0,02 <0,05 8,15 mg/l mg/l • 102% Sulphate Orthophosphate_1 22,8 0,082 0,3 0,002 17,93 mg/l mg/l 79% Boron_1 DOC 0,058 2,63 0,001 0,04 0,061 mg/l mg/l 105% Total P (as PO4)_1 KMnO4-Index 0,087 3,90 0,002 0,08 mg/l mg/l Silicon 4,56 0,12 mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate_1 DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron_1Total P (as PO4)_1 Silicon Sample N131A Laboratory BF Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity 479 1 481 12 µS/cm 100% Total hardness 9,47 0,07 9,2 0,9 °d 97% Alkalinity 1,79 0,01 1,76 0,2 mmol/l 98% Hydrogen carbonate 106 1 104 10 mg/l 98% Calcium 37,5 0,3 37,7 4 mg/l 101% Magnesium 18,3 0,2 17,5 2 mg/l 96% Sodium 26,8 0,2 26,7 3 mg/l 100% Potassium 2,52 0,03 2,52 0,3 mg/l 100% Nitrate 50,5 1,0 49,6 5 mg/l 98% Nitrite 0,040 0,001 0,041 0,004 mg/l 103% Ammonium <0,01 Chloride 42,1 <0,01 0,5 43,1 mg/l • 4 mg/l 102% Sulphate 39,4 0,5 38,9 4 mg/l 99% Orthophosphate 0,090 0,001 0,087 0,009 mg/l 97% Boron <0,02 DOC 4,06 0,05 4,2 Total P (as PO4) 0,148 0,002 KMnO4-Index 3,40 0,09 Silicon 2,28 0,05 <0,005 mg/l • 0,4 mg/l 103% 0,17 0,02 mg/l 115% 3,44 0,3 mg/l 101% 2,24 0,2 mg/l 98% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory BF Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 355 5,6 9 0,6 µS/cm °d 100% 104% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,88 173 0,3 15 mmol/l mg/l 97% 98% Calcium Magnesium 27,5 6,73 0,3 0,08 28,7 6,76 3 0,7 mg/l mg/l 104% 100% Sodium Potassium 36,8 7,55 0,3 0,04 36,8 7,81 4 0,8 mg/l mg/l 100% 103% Nitrate Nitrite 4,87 0,083 0,11 0,001 4,6 0,085 0,5 0,008 mg/l mg/l 94% 102% Ammonium Chloride 0,050 8,02 0,001 0,02 0,058 7,3 0,006 0,7 mg/l mg/l 116% 91% Sulphate Orthophosphate_1 22,8 0,082 0,3 0,002 22,1 0,085 2 0,009 mg/l mg/l 97% 104% Boron_1 DOC 0,058 2,63 0,001 0,04 0,059 2,74 0,006 0,3 mg/l mg/l 102% 104% Total P (as PO4)_1 KMnO4-Index 0,087 3,90 0,002 0,08 0,11 4,2 0,01 0,4 mg/l mg/l 126% 108% Silicon 4,56 0,12 4,53 0,4 mg/l 99% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate_1 DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron_1Total P (as PO4)_1 Silicon Sample N131A Laboratory BG Parameter Target value ± U (k=2) Result ± Unit Recovery 490 2,0 µS/cm 102% Conductivity 479 1 Total hardness 9,47 0,07 °d Alkalinity 1,79 0,01 mmol/l Hydrogen carbonate 106 1 mg/l Calcium 37,5 0,3 mg/l Magnesium 18,3 0,2 mg/l Sodium 26,8 0,2 mg/l Potassium 2,52 0,03 Nitrate 50,5 1,0 49,8 3,03 mg/l 99% Nitrite 0,040 0,001 0,073 0,031 mg/l 183% Ammonium <0,01 0,024 0,002 mg/l FP Chloride 42,1 mg/l 0,5 Sulphate 39,4 0,5 Orthophosphate 0,090 0,001 Boron <0,02 mg/l mg/l 0,095 0,010 mg/l 106% mg/l DOC 4,06 0,05 Total P (as PO4) 0,148 0,002 mg/l KMnO4-Index 3,40 0,09 mg/l Silicon 2,28 0,05 mg/l 0,161 0,014 Recovery [%] mg/l 109% Deviation Recovery 140 130 120 110 FP 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory BG Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery 367 2,0 µS/cm °d 103% Conductivity Total hardness 356 5,40 1 0,05 Alkalinity Hydrogen carbonate 2,96 177 0,02 1 mmol/l mg/l Calcium Magnesium 27,5 6,73 0,3 0,08 mg/l mg/l Sodium Potassium 36,8 7,55 0,3 0,04 mg/l mg/l Nitrate Nitrite 4,87 0,083 0,11 0,001 5,21 0,117 0,317 0,049 mg/l mg/l 107% 141% Ammonium Chloride 0,050 8,02 0,001 0,02 0,064 0,005 mg/l mg/l 128% Sulphate Orthophosphate_1 22,8 0,082 0,3 0,002 0,091 0,010 Boron_1 DOC 0,058 2,63 0,001 0,04 Total P (as PO4)_1 KMnO4-Index 0,087 3,90 0,002 0,08 Silicon 4,56 0,12 mg/l mg/l 111% mg/l mg/l 0,104 0,009 mg/l mg/l 120% mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate_1 DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron_1Total P (as PO4)_1 Silicon Sample N131A Laboratory BH Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity 479 1 479 µS/cm 100% Total hardness 9,47 0,07 9,47 °d 100% Alkalinity 1,79 0,01 1,78 mmol/l 99% Hydrogen carbonate 106 1 106 mg/l 100% Calcium 37,5 0,3 37,9 0,3 mg/l 101% Magnesium 18,3 0,2 18,4 0,3 mg/l 101% Sodium 26,8 0,2 26,2 0,2 mg/l 98% Potassium 2,52 0,03 2,53 0,08 mg/l 100% Nitrate 50,5 1,0 52,9 0,8 mg/l 105% Nitrite 0,040 0,001 0,043 0,003 mg/l 108% Ammonium <0,01 0,003 mg/l • Chloride 42,1 0,011 42,9 40,1 0,086 [0,002] 0,4 mg/l 102% 1,1 mg/l 102% 0,002 mg/l 96% mg/l • 0,5 Sulphate 39,4 0,5 Orthophosphate 0,090 0,001 Boron <0,02 DOC 4,06 0,05 Total P (as PO4) 0,148 0,002 0,122 0,002 mg/l 82% KMnO4-Index 3,40 0,09 3,09 0,81 mg/l 91% Silicon 2,28 0,05 mg/l mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory BH Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 348 5,48 µS/cm °d 98% 101% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,93 176 mmol/l mg/l 99% 99% Calcium Magnesium 27,5 6,73 0,3 0,08 28,3 6,84 0,3 0,25 mg/l mg/l 103% 102% Sodium Potassium 36,8 7,55 0,3 0,04 34,7 7,40 0,2 0,08 mg/l mg/l 94% 98% Nitrate Nitrite 4,87 0,083 0,11 0,001 4,66 0,090 0,17 0,003 mg/l mg/l 96% 108% Ammonium Chloride 0,050 8,02 0,001 0,02 0,056 8,15 0,003 0,27 mg/l mg/l 112% 102% Sulphate Orthophosphate_1 22,8 0,082 0,3 0,002 22,5 0,082 1,1 0,001 mg/l mg/l 99% 100% Boron_1 DOC 0,058 2,63 0,001 0,04 0,060 0,002 mg/l mg/l 103% Total P (as PO4)_1 KMnO4-Index 0,087 3,90 0,002 0,08 0,083 3,81 0,002 0,82 mg/l mg/l 95% 98% Silicon 4,56 0,12 mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate_1 DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron_1Total P (as PO4)_1 Silicon Sample N131A Laboratory BI Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity 479 1 477 µS/cm 100% Total hardness 9,47 0,07 9,6 °d 101% Alkalinity 1,79 0,01 1,88 mmol/l 105% Hydrogen carbonate 106 1 114,7 mg/l 108% Calcium 37,5 0,3 38,81 mg/l 103% Magnesium 18,3 0,2 18,18 mg/l 99% Sodium 26,8 0,2 27,12 mg/l 101% Potassium 2,52 0,03 2,57 mg/l 102% Nitrate 50,5 1,0 50,25 mg/l 100% Nitrite 0,040 0,001 0,05 mg/l 125% Ammonium <0,01 <0,02 mg/l • Chloride 42,1 43,55 mg/l 103% 0,5 Sulphate 39,4 0,5 42,46 mg/l 108% Orthophosphate 0,090 0,001 <0,02 mg/l FN Boron <0,02 mg/l DOC 4,06 0,05 Total P (as PO4) 0,148 0,002 5,58 mg/l mg/l KMnO4-Index 3,40 0,09 mg/l Silicon 2,28 0,05 mg/l 137% Deviation Recovery 140 130 120 110 100 FN 90 80 70 60 Orthophosphate Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory BI Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 359 5,5 µS/cm °d 101% 102% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,92 178,2 mmol/l mg/l 99% 101% Calcium Magnesium 27,5 6,73 0,3 0,08 28,50 6,52 mg/l mg/l 104% 97% Sodium Potassium 36,8 7,55 0,3 0,04 37,37 7,68 mg/l mg/l 102% 102% Nitrate Nitrite 4,87 0,083 0,11 0,001 4,95 0,10 mg/l mg/l 102% 120% Ammonium Chloride 0,050 8,02 0,001 0,02 0,06 8,8 mg/l mg/l 120% 110% Sulphate Orthophosphate_1 22,8 0,082 0,3 0,002 26,58 0,09 mg/l mg/l 117% 110% Boron_1 DOC 0,058 2,63 0,001 0,04 3,28 mg/l mg/l 125% Total P (as PO4)_1 KMnO4-Index 0,087 3,90 0,002 0,08 mg/l mg/l Silicon 4,56 0,12 mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate_1 DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron_1Total P (as PO4)_1 Silicon Sample N131A Laboratory BJ Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery 475 29 µS/cm 99% Conductivity 479 1 Total hardness 9,47 0,07 Alkalinity 1,79 0,01 1,78 0,036 mmol/l 99% Hydrogen carbonate 106 1 109 2,2 mg/l 103% Calcium 37,5 0,3 mg/l Magnesium 18,3 0,2 mg/l Sodium 26,8 0,2 mg/l Potassium 2,52 0,03 Nitrate 50,5 1,0 48,4 3,9 mg/l 96% Nitrite 0,040 0,001 0,0419 0,0042 mg/l 105% Ammonium <0,01 <0,013 0,0019 mg/l • Chloride 42,1 42,9 1,3 mg/l 102% 0,5 °d mg/l Sulphate 39,4 0,5 38,4 5,8 mg/l 97% Orthophosphate 0,090 0,001 0,0919 0,0046 mg/l 102% Boron <0,02 DOC 4,06 0,05 4,61 0,92 mg/l 114% Total P (as PO4) 0,148 0,002 0,153 0,038 mg/l 103% KMnO4-Index 3,40 0,09 Silicon 2,28 0,05 mg/l mg/l 2,59 0,65 mg/l 114% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory BJ Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 353 21 µS/cm °d 99% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,94 179 0,059 3,6 mmol/l mg/l 99% 101% Calcium Magnesium 27,5 6,73 0,3 0,08 mg/l mg/l Sodium Potassium 36,8 7,55 0,3 0,04 mg/l mg/l Nitrate Nitrite 4,87 0,083 0,11 0,001 4,71 0,0854 0,38 0,0085 mg/l mg/l 97% 103% Ammonium Chloride 0,050 8,02 0,001 0,02 0,0537 8,50 0,0081 0,26 mg/l mg/l 107% 106% Sulphate Orthophosphate_1 22,8 0,082 0,3 0,002 22,4 0,0889 3,4 0,0044 mg/l mg/l 98% 108% Boron_1 DOC 0,058 2,63 0,001 0,04 3,08 0,62 mg/l mg/l 117% Total P (as PO4)_1 KMnO4-Index 0,087 3,90 0,002 0,08 <0,15 0,038 mg/l mg/l • Silicon 4,56 0,12 5,14 1,3 mg/l 113% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate_1 DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron_1Total P (as PO4)_1 Silicon Sample N131A Laboratory BK Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Conductivity 479 1 Total hardness 9,47 0,07 Alkalinity 1,79 0,01 Hydrogen carbonate 106 1 mg/l Calcium 37,5 0,3 mg/l Magnesium 18,3 0,2 mg/l Sodium 26,8 0,2 mg/l Potassium 2,52 0,03 mg/l Nitrate 50,5 1,0 mg/l Nitrite 0,040 0,001 mg/l Ammonium <0,01 Chloride 42,1 0,5 mg/l Sulphate 39,4 0,5 mg/l Orthophosphate 0,090 0,001 mg/l Boron <0,02 DOC 4,06 0,05 mg/l Total P (as PO4) 0,148 0,002 mg/l KMnO4-Index 3,40 0,09 mg/l Silicon 2,28 0,05 mg/l Recovery µS/cm °d 1,793 0,01 mmol/l 100% mg/l mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory BK Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Conductivity Total hardness 356 5,40 1 0,05 Alkalinity Hydrogen carbonate 2,96 177 0,02 1 Calcium Magnesium 27,5 6,73 0,3 0,08 mg/l mg/l Sodium Potassium 36,8 7,55 0,3 0,04 mg/l mg/l Nitrate Nitrite 4,87 0,083 0,11 0,001 mg/l mg/l Ammonium Chloride 0,050 8,02 0,001 0,02 mg/l mg/l Sulphate Orthophosphate_1 22,8 0,082 0,3 0,002 mg/l mg/l Boron_1 DOC 0,058 2,63 0,001 0,04 mg/l mg/l Total P (as PO4)_1 KMnO4-Index 0,087 3,90 0,002 0,08 mg/l mg/l Silicon 4,56 0,12 mg/l Recovery µS/cm °d 2,946 0,02 mmol/l mg/l 100% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate_1 DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron_1Total P (as PO4)_1 Silicon Sample N131A Laboratory BL Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery 99% Conductivity 479 1 475,5 9,5 µS/cm Total hardness 9,47 0,07 9,41 0,19 °d 99% Alkalinity 1,79 0,01 1,80 0,04 mmol/l 101% 100% Hydrogen carbonate 106 1 106,4 2,2 mg/l Calcium 37,5 0,3 36,6 0,7 mg/l 98% Magnesium 18,3 0,2 18,7 0,4 mg/l 102% Sodium 26,8 0,2 Potassium 2,52 0,03 Nitrate 50,5 1,0 51,4 3,1 mg/l 102% Nitrite 0,040 0,001 0,039 0,002 mg/l 98% Ammonium <0,01 Chloride 42,1 mg/l mg/l <0,02 0,5 42,8 mg/l • 2,6 mg/l 102% Sulphate 39,4 0,5 40,2 2,4 mg/l 102% Orthophosphate 0,090 0,001 0,090 0,006 mg/l 100% Boron <0,02 mg/l DOC 4,06 0,05 4,13 0,17 mg/l 102% Total P (as PO4) 0,148 0,002 0,146 0,010 mg/l 99% KMnO4-Index 3,40 0,09 mg/l Silicon 2,28 0,05 mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory BL Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 357,8 5,38 7,2 0,11 µS/cm °d 101% 100% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,96 177,5 0,06 3,6 mmol/l mg/l 100% 100% Calcium Magnesium 27,5 6,73 0,3 0,08 27,3 6,8 0,5 0,2 mg/l mg/l 99% 101% Sodium Potassium 36,8 7,55 0,3 0,04 Nitrate Nitrite 4,87 0,083 0,11 0,001 4,93 0,081 0,30 0,004 mg/l mg/l 101% 98% Ammonium Chloride 0,050 8,02 0,001 0,02 0,053 8,31 0,003 0,50 mg/l mg/l 106% 104% Sulphate Orthophosphate_1 22,8 0,082 0,3 0,002 23,3 0,094 1,4 0,007 mg/l mg/l 102% 115% Boron_1 DOC 0,058 2,63 0,001 0,04 2,75 0,11 mg/l mg/l 105% Total P (as PO4)_1 KMnO4-Index 0,087 3,90 0,002 0,08 0,097 0,007 Silicon 4,56 0,12 mg/l mg/l mg/l mg/l 111% mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate_1 DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron_1Total P (as PO4)_1 Silicon Sample N131A Laboratory BM Parameter Target value ± U (k=2) Result ± Unit Recovery Conductivity 479 1 474 µS/cm 99% Total hardness 9,47 0,07 9,07 °d 96% Alkalinity 1,79 0,01 1,65 mmol/l 92% Hydrogen carbonate 106 1 100 mg/l 94% Calcium 37,5 0,3 36,8 mg/l 98% Magnesium 18,3 0,2 17,0 mg/l 93% Sodium 26,8 0,2 24,9 mg/l 93% Potassium 2,52 0,03 2,68 mg/l 106% Nitrate 50,5 1,0 49,2 mg/l 97% Nitrite 0,040 0,001 0,044 mg/l 110% Ammonium <0,01 0,016 mg/l FP Chloride 42,1 41,5 mg/l 99% 0,5 Sulphate 39,4 0,5 39,4 mg/l 100% Orthophosphate 0,090 0,001 0,113 mg/l 126% Boron <0,02 <0,01 mg/l • DOC 4,06 0,05 9,71 mg/l 239% Total P (as PO4) 0,148 0,002 0,121 mg/l 82% KMnO4-Index 3,40 0,09 2,51 mg/l 74% Silicon 2,28 0,05 2,72 mg/l 119% Recovery [%] Deviation Recovery 140 130 120 110 FP 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory BM Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 351 5,02 µS/cm °d 99% 93% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,63 160 mmol/l mg/l 89% 90% Calcium Magnesium 27,5 6,73 0,3 0,08 26,1 5,96 mg/l mg/l 95% 89% Sodium Potassium 36,8 7,55 0,3 0,04 32,3 6,49 mg/l mg/l 88% 86% Nitrate Nitrite 4,87 0,083 0,11 0,001 4,34 0,088 mg/l mg/l 89% 106% Ammonium Chloride 0,050 8,02 0,001 0,02 0,027 7,80 mg/l mg/l 54% 97% Sulphate Orthophosphate_1 22,8 0,082 0,3 0,002 21,9 0,108 mg/l mg/l 96% 132% Boron_1 DOC 0,058 2,63 0,001 0,04 0,053 5,62 mg/l mg/l 91% 214% Total P (as PO4)_1 KMnO4-Index 0,087 3,90 0,002 0,08 0,110 3,18 mg/l mg/l 126% 82% Silicon 4,56 0,12 11,4 mg/l 250% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate_1 DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron_1Total P (as PO4)_1 Silicon Sample N131A Laboratory BN Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity 479 1 480 28,8 µS/cm 100% Total hardness 9,47 0,07 9,57 0,718 °d 101% Alkalinity 1,79 0,01 1,72 0,163 mmol/l 96% Hydrogen carbonate 106 1 102 9,7 mg/l 96% Calcium 37,5 0,3 38,5 2,31 mg/l 103% Magnesium 18,3 0,2 18,2 2,19 mg/l 99% Sodium 26,8 0,2 27,1 1,76 mg/l 101% Potassium 2,52 0,03 2,51 0,251 mg/l 100% Nitrate 50,5 1,0 52,9 5,55 mg/l 105% Nitrite 0,040 0,001 0,040 0,0040 mg/l 100% Ammonium <0,01 Chloride 42,1 <0,04 mg/l • 0,5 44,1 3,97 mg/l 105% 40,6 3,65 mg/l 103% Sulphate 39,4 0,5 Orthophosphate 0,090 0,001 Boron <0,02 mg/l • DOC 4,06 0,05 4,13 0,248 mg/l 102% Total P (as PO4) 0,148 0,002 0,110 0,0110 mg/l 74% KMnO4-Index 3,40 0,09 mg/l Silicon 2,28 0,05 mg/l mg/l <0,020 Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory BN Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 350 5,55 21,0 0,416 µS/cm °d 98% 103% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,86 172 0,272 16,3 mmol/l mg/l 97% 97% Calcium Magnesium 27,5 6,73 0,3 0,08 28,5 6,83 1,71 0,819 mg/l mg/l 104% 101% Sodium Potassium 36,8 7,55 0,3 0,04 36,8 7,61 2,39 0,761 mg/l mg/l 100% 101% Nitrate Nitrite 4,87 0,083 0,11 0,001 4,88 0,084 0,513 0,0084 mg/l mg/l 100% 101% Ammonium Chloride 0,050 8,02 0,001 0,02 0,062 8,28 0,0062 0,746 mg/l mg/l 124% 103% Sulphate Orthophosphate_1 22,8 0,082 0,3 0,002 23,1 2,08 mg/l mg/l 101% Boron_1 DOC 0,058 2,63 0,001 0,04 0,061 2,65 0,0085 0,159 mg/l mg/l 105% 101% Total P (as PO4)_1 KMnO4-Index 0,087 3,90 0,002 0,08 0,076 0,0076 mg/l mg/l 87% Silicon 4,56 0,12 mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate_1 DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron_1Total P (as PO4)_1 Silicon Sample N131A Laboratory BO Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity 479 1 Total hardness 9,47 0,07 µS/cm Alkalinity 1,79 0,01 Hydrogen carbonate 106 1 Calcium 37,5 0,3 41,08 1,39 mg/l 110% Magnesium 18,3 0,2 15,68 0,43 mg/l 86% Sodium 26,8 0,2 Potassium 2,52 0,03 Nitrate 50,5 1,0 Nitrite 0,040 0,001 Ammonium <0,01 Chloride 42,1 0,5 42,53 0,60 mg/l 101% Sulphate 39,4 0,5 39,07 0,70 mg/l 99% Orthophosphate 0,090 0,001 Boron <0,02 DOC 4,06 0,05 mg/l Total P (as PO4) 0,148 0,002 mg/l KMnO4-Index 3,40 0,09 mg/l Silicon 2,28 0,05 mg/l °d 0,18 0,075 mmol/l 10% mg/l mg/l mg/l 46,47 0,40 mg/l 92% mg/l mg/l mg/l mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory BO Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 µS/cm °d Alkalinity Hydrogen carbonate 2,96 177 0,02 1 0,30 0,075 mmol/l mg/l 10% Calcium Magnesium 27,5 6,73 0,3 0,08 25,05 9,12 1,39 0,43 mg/l mg/l 91% 136% Sodium Potassium 36,8 7,55 0,3 0,04 Nitrate Nitrite 4,87 0,083 0,11 0,001 Ammonium Chloride 0,050 8,02 0,001 0,02 Sulphate Orthophosphate_1 22,8 0,082 0,3 0,002 Boron_1 DOC 0,058 2,63 0,001 0,04 mg/l mg/l Total P (as PO4)_1 KMnO4-Index 0,087 3,90 0,002 0,08 mg/l mg/l Silicon 4,56 0,12 mg/l mg/l mg/l 4,85 0,40 7,63 0,60 23,21 0,70 mg/l mg/l mg/l mg/l mg/l mg/l 100% 95% 102% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate_1 DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron_1Total P (as PO4)_1 Silicon Sample N131A Laboratory BP Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery 479 14 µS/cm 100% Conductivity 479 1 Total hardness 9,47 0,07 Alkalinity 1,79 0,01 1,77 Hydrogen carbonate 106 1 104,9 Calcium 37,5 0,3 mg/l Magnesium 18,3 0,2 mg/l Sodium 26,8 0,2 mg/l Potassium 2,52 0,03 mg/l Nitrate 50,5 1,0 Nitrite 0,040 0,001 Ammonium <0,01 Chloride 42,1 °d 0,05 mmol/l 99% mg/l 99% mg/l 0,040 <0,020 0,003 mg/l 100% mg/l • 0,5 mg/l Sulphate 39,4 0,5 mg/l Orthophosphate 0,090 0,001 mg/l Boron <0,02 DOC 4,06 0,05 mg/l Total P (as PO4) 0,148 0,002 mg/l KMnO4-Index 3,40 0,09 mg/l Silicon 2,28 0,05 mg/l mg/l Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron Total P (as PO4) Silicon Sample N131B Laboratory BP Parameter Recovery [%] Target value ± U (k=2) Result ± Unit Recovery Conductivity Total hardness 356 5,40 1 0,05 357 11 µS/cm °d 100% Alkalinity Hydrogen carbonate 2,96 177 0,02 1 2,93 175,7 0,09 mmol/l mg/l 99% 99% Calcium Magnesium 27,5 6,73 0,3 0,08 mg/l mg/l Sodium Potassium 36,8 7,55 0,3 0,04 mg/l mg/l Nitrate Nitrite 4,87 0,083 0,11 0,001 Ammonium Chloride 0,050 8,02 0,001 0,02 Sulphate Orthophosphate_1 22,8 0,082 0,3 0,002 mg/l mg/l Boron_1 DOC 0,058 2,63 0,001 0,04 mg/l mg/l Total P (as PO4)_1 KMnO4-Index 0,087 3,90 0,002 0,08 mg/l mg/l Silicon 4,56 0,12 mg/l 0,082 0,005 0,050 0,008 mg/l mg/l mg/l mg/l 99% 100% Deviation Recovery 140 130 120 110 100 90 80 70 60 Total hardness Hydrogen carbonateMagnesium Potassium Nitrite Chloride Orthophosphate_1 DOC KMnO4-Index Conductivity Alkalinity Calcium Sodium Nitrate Ammonium Sulphate Boron_1Total P (as PO4)_1 Silicon