Chemical Services
Transcription
Chemical Services
DISCOVER WHY MOST PULP AND PAPER COMPANIES CHOOSE ECONOTECH FOR ALL THEIR TESTING NEEDS ECONOTECH STANDARD SERVICE LIST March 2012 Econotech Services Ltd. 852 Derwent Way Delta, British Columbia Canada V3M 5R1 Tel: 604.526.4221 Toll Free: 1.800.463.5700 Fax: 604.526.1898 Email:[email protected] Website:www.econotech.com Version: March 2012 Econotech Services Ltd. 852 Derwent Way, Delta, British Columbia, Canada, V3M 5R1 Tel: 604.526.4221 Toll Free: 1.800.463.5700 Fax: 604.526.1898 www.econotech.com General Inquiries 604-526-4221 [email protected] Department Contact Email Phone Pulping Analytical Chemistry Thomas Yuen [email protected] 604.529.2834 Contaminant Identification Eric Chao [email protected] 604.529.2833 Environmental & AOX Jodi Murphy [email protected] 604.529.2808 Pulping and Bleaching Studies Sabrina Burkhardt [email protected] 604.529.2804 Pulp and Paper Testing Sandra Fodor [email protected] 604.529.2814 Microscopy Jodi Murphy [email protected] 604.529.2808 Dissolving Pulp Evaluation Sabrina Burkhardt [email protected] 604.529.2804 Reburned Lime Analyzer Jacquie Stanley [email protected] 604.529.2800 Call us today Version: March 2012 Econotech Services Ltd. 852 Derwent Way, Delta, British Columbia, Canada, V3M 5R1 Tel: 604.526.4221 Toll Free: 1.800.463.5700 Fax: 604.526.1898 www.econotech.com Page 2 Chemical Services Contact: Thomas Yuen [email protected] 604.529.2834 A Acetone extractives Acid insolubles Acid insoluble ash (free carbon) Acidity or alkalinity, pulp Alkali resistant cellulose (by calculation) Alpha, Beta, Gamma cellulose Ash @ 525°C, @ 725°C, @ 1000°C Ash fusion temperature (oxidizing or reducing atmosphere ) B Biochemical Oxygen Demand, BOD, pulp and liquor C Carbon, fixed Carboxyl functional group content Carboxyl and aldehyde functional group content Carbohydrates (wood sugars: (arabinan, xylan, mannan, glactan, glucan) Caustic solubility, 1% 100°C Caustic solubility, 10% 25°C Caustic solubility, 18% 25°C (hemicellulose) Caustic solubility, 21.5%, 25°C Caustic solubility, 20°C Chemical Oxygen Demand, COD, pulp and liquor Chloride, water soluble Chloride Chromium, hexavalent Conductivity Consistency, pulp suspensions Copper number D Dichloromethane extractables (DCM) E Ethanol extractables Ether extractables Version: March 2012 Econotech Services Ltd. 852 Derwent Way, Delta, British Columbia, Canada, V3M 5R1 Tel: 604.526.4221 Toll Free: 1.800.463.5700 Fax: 604.526.1898 www.econotech.com Page 3 Chemical Services Contact: Thomas Yuen [email protected] 604.529.2834 F Formaldehyde, (7 standard, specific and international methods) Formaldehyde, free emulsion polymers H Hemicellulose (see Caustic Solubility) K Kappa number Klason lignin L Lignin: Klason in wood, bleached and unbleached pulps Soluble lignin Residual in bleached, dissolving grade pulps M Metals: Routine metals in wood, pulp and lime (23 elements): Al, As, Ba, Cd, Ca, Cr, Co, Cu, Fe, Pb, Li, Mg, Mn, Mo, Ni, P, K, Si, Na, Sr, Ti, V, Zn Optional metals: B, Hg, Se, Th By element: Na, K, Mg, Ca, Cu, Fe, Mn, Pb Organo silicone Moisture (oven dry method) P Pentosans Permanganate number (K number) pH (cold) pH (hot) Pitch, detrimental in pulp Potential tall oil in wood (includes grinding) Potential turpentine in wood Version: March 2012 Econotech Services Ltd. 852 Derwent Way, Delta, British Columbia, Canada, V3M 5R1 Tel: 604.526.4221 Toll Free: 1.800.463.5700 Fax: 604.526.1898 www.econotech.com Page 4 Chemical Services Contact: Thomas Yuen [email protected] 604.529.2834 R Residual lignin, bleached dissolving grade pulps S Slime test (presence/absence) Sodium (total, washable and bound sodium) Solubility, 10% KOH Surface pH Starch Sulfate, water soluble Sulfur, (total) Sulfur, reducible (TRS) Sulfur, total and bound V Viscosity, 0.5% CED Viscosity, 0.5% CED moisture teller method Viscosity, 1% ball fall Viscosity, level off intrinsic (LOIV) Viscosity, intrinsic/degree of polymerization W Water solubility of wood, pulp & paper (hot & cold pH) Water soluble chloride Water soluble sulfate Version: March 2012 Econotech Services Ltd. 852 Derwent Way, Delta, British Columbia, Canada, V3M 5R1 Tel: 604.526.4221 Toll Free: 1.800.463.5700 Fax: 604.526.1898 www.econotech.com Page 5 Chemical Services Contact: Thomas Yuen [email protected] 604.529.2834 All Liquors Biochemical Oxygen Demand, BOD Boiling Point Carbohydrates (wood sugars: arabinan, xylan, mannan, galactan, glucan) Chemical Oxygen Demand (COD) Chlorides Metals: Routine metals for liquors (24 elements) Optional metals (Hg, Se, Th) By element (Na, K, Mg, Ca, Cu, Fe, Mn, Pb) Soluble (dissolved) metals Sulfur, Total White, Green Liquor and Smelt ABC titration Active alkali Effective alkali Total titratable alkali Sulfidity, ABC Titration Causticity, ABC Titration Na2S Sodium sulfate Sodium sulfite and sodium thiosulfate Polysulfide sulfur Black Liquor Active alkali/effective alkali Total alkali, conductometric Total titratable alkali Anthraquinone Ash @ 600°C Ash, sulfated, organic/inorganic ratio Boiling point rise Calorific Value, Parr Calorimeter/Higher Heating Value (HHV) Density (weak and strong black liquor) Fiber content Version: March 2012 Econotech Services Ltd. 852 Derwent Way, Delta, British Columbia, Canada, V3M 5R1 Tel: 604.526.4221 Toll Free: 1.800.463.5700 Fax: 604.526.1898 www.econotech.com Page 6 Chemical Services Contact: Tom Yuen [email protected] 604.529.2834 Black Liquor (continued) Lignin, UV Oxalate Tall oil content Thermal value, black liquor solids Solids, total, oven drying, weak and strong black liquor Swelling characteristics, dry liquor solids Viscosity @ various temperature levels Viscosity curve @ 90°C, 100°C, 110°C Viscosity, sample preparation to various solids levels Microanalysis, elemental analysis C,H,N,O Sulfur, S Chloride, Cl Sodium, Na Potassium, K Inerts (Ca, Mg, Fe, Al, Si) Anions Sulfide Carbonate Oxalate Thiosulfate Sulfite Sulfite and sodium thiosulfate Sulfate Chlorine Compounds Cl-, ClO2-, ClO3- in bleach solutions Version: March 2012 Econotech Services Ltd. 852 Derwent Way, Delta, British Columbia, Canada, V3M 5R1 Tel: 604.526.4221 Toll Free: 1.800.463.5700 Fax: 604.526.1898 www.econotech.com Page 7 Chemical Services Contact: Tom Yuen [email protected] 604.529.2834 Condensate Hydrogen sulfide (H2S) and methyl mercaptan (CH3SH) Methyl disulfide (CH3)2S and dimethyl disulfide (CH3)2S2 Methanol Resin and fatty acids Total reducible sulfur Terpenes: α-pinene, Camphene, ß-pinene, Myrcene, Δ3-carene, α-phellandrene, α-terpinene, ρ-menthene, ρ-cymene, α-limonene, ß-ocimene, γ-terpinene, α-terpineol Lime Mud Free carbon (ash and lime) Available (free) lime, CaO CaCO3, loss on ignition @ 1000°C CaCO3, by gas chromatography Hydrated lime Ca(OH)2 Limestone or Reburned Lime Available lime, (CaO), sugar test Available (free) lime (CaO), calcium carbonate (CaCO3) Preparation, if required (crushing, grinding, etc.) Metals: (preparation by ashing and acid digestion or by ashing and alkali fusion of acid solubles) Routine metals in lime (24 elements): Al, As, Ba, B, Cd, Ca, Cr, Co, Cu, Fe, Pb, Li, Mg, Mn, Mo, Ni, P, K , Si, Na, Sr, Ti, V, Zn Saltcake Carbonate Chloride Free Carbon Insoluble matter Sodium thiosulfate Sodium sulfite pH Sulfate Version: March 2012 Econotech Services Ltd. 852 Derwent Way, Delta, British Columbia, Canada, V3M 5R1 Tel: 604.526.4221 Toll Free: 1.800.463.5700 Fax: 604.526.1898 www.econotech.com Page 8 Chemical Services Contact: Tom Yuen [email protected] 604.529.2834 Spent Sulfite Liquor Sulfate as SO3 Total sulfur Tall Oil Acid number Bottom solids and water (BSW) Rosin acids, fatty acids and unsaponifiables Black Liquor Analysis Packages: Thermal data special Calorific value (BTU/lb) Percent solids Organic/inorganic ratio (sulfated ash) Routine black liquor monitoring Calorific value (BTU/lb) Percent solids Total sulfur (S) Total chloride (Cl) Total sodium, potassium (Na, K) Micro elemental analysis (CHNO) Extended black liquor evaluation All of the Routine Black Liquor Monitoring package plus: Carbonate (Na2CO3) Sulfate (Na2SO4) Sulfite and thiosulfate (Na2SO3, Na2S2O3) Active (and estimated effective) alkali Total alkali Organic/inorganic ratio (sulfated ash) Viscosity of as received liquor measured at three temperatures in the range of 90°C to 115°C Inerts (Ca, Mg, Fe, Si, Al) Tall oil content Version: March 2012 Econotech Services Ltd. 852 Derwent Way, Delta, British Columbia, Canada, V3M 5R1 Tel: 604.526.4221 Toll Free: 1.800.463.5700 Fax: 604.526.1898 www.econotech.com Page 9 Chemical Services Contact: Tom Yuen [email protected] 604.529.2834 Viscosity and Swelling Properties Reduced pressure evaporation of black liquor to three solids levels followed by measurement of viscosity at three temperatures. Calorific value (BTU/lb) Organic/inorganic ratio (sulfated ash) Swelling characteristics of dry liquor solids (duplicate) Micro elemental analysis (CHNO) Chemical Services - Woodwaste, Sludge, Hog Fuel & Biomass Fuels : Fuel ultimate analysis: Ash @ 750°C Carbon, C Hydrogen, H Nitrogen, N Oxygen, O Total sulfur, S Chloride content, Cl Fuel proximate analysis: Volatile matter Fixed carbon Ash @ 750°C Higher heating value (Calorific value) Size classifications (Williams or Tyler sieve) Wood density Ash analysis Metals/Oxides Routine scan (23 elements): Al, As, Ba, B, Cd, Ca, Cr, Co, Cu, Fe, Pb, Li, Mg, Mn, Mo, Ni, P, K, Si, Sr, Ti, V, Zn By element: Na, K, Mg, Ca, Cu, Fe, Mn, Pb Optional metals: Hg, Se, Th Ash fusion temperature (oxidating or reducing atmosphere ) Version: March 2012 Econotech Services Ltd. 852 Derwent Way, Delta, British Columbia, Canada, V3M 5R1 Tel: 604.526.4221 Toll Free: 1.800.463.5700 Fax: 604.526.1898 www.econotech.com Page 10 Chemical Analysis Contact: Eric Chao [email protected] 604.529.2833 Contaminant Identification Material identification projects require the following support services: Sample preliminary evaluation Analytical preliminary evaluation Analytical scheme design Data evaluation and interpretation Consultation Fourier Transform Infrared Spectroscopy: FTIR Includes the following techniques: KBr disc Pyrolysis NaCl salt plate Samples such as solids, powder, liquid, plastic, rubber, extractives can be identified using one or more of the above listed FTIR techniques. Pulp & paper process deposits, deposits, contaminants, plastics, unknown materials, coating material, etc. are analyzed frequently. FTIR – Microscope Microtransmission Microreflectance Micro amounts of pulp & paper contaminants, process deposits, tape pull, fly ash, plastic coating, etc. can be identified using these techniques. Version: March 2012 Econotech Services Ltd. 852 Derwent Way, Delta, British Columbia, Canada, V3M 5R1 Tel: 604.526.4221 Toll Free: 1.800.463.5700 Fax: 604.526.1898 www.econotech.com Page 11 Environmental Services Contact: Jodi Murphy [email protected] 604.529.2808 A Anions: fluoride, chloride, bromide, iodine, nitrite, nitrate, sulfate, sulfide, sulfite, thiosulfate, chloride, chlorite, chlorate B Biochemical Oxygen Demand, BOD5, liquor or pulp C Chemical Oxygen Demand, COD, from pulp Chlorine, residual or total Chloride Conductivity F Formaldehyde, colorimetrically, water/aqueous extracts Formaldehyde, in pulp/paper products (7 standard, specific and international methods) M Methanol, ethanol, effluents, condensates Methylene blue active substances, MBAS, effluents N Nitrogen, Kjeldahl, effluents, solids P Phenols (colorimetric) Phosphate, total (HClO4 digestion), effluents, solids and sludges Phosphate, total dissolved (ortho), (PO4) Version: March 2012 Econotech Services Ltd. 852 Derwent Way, Delta, British Columbia, Canada, V3M 5R1 Tel: 604.526.4221 Toll Free: 1.800.463.5700 Fax: 604.526.1898 www.econotech.com Page 12 Environmental Services Contact: Jodi Murphy [email protected] 604.529.2808 R Resin and fatty acids: aqueous, soil, (free and total) Resin acids: pimaric acid, sandaracopimaric acid, isopimaric acid, levopimaric acid, dehydroabietic acid, abietic acid, neoabietic acid, chlorodehydroabietic acid, dicholordehydroabietic acid Fatty acids: C12 lauric acid, C14 myristic acid, C16 palmitic acid, C18:0 stearic acid, C18:1/C18:3 oleic/linolenic acid, C18:2 linoleic acid, C20 arachidic acid, C22 behenic acid, C24 lignoceric acid S Starch, soluble, effluents Sulfide, sulfite, thiosulfate (see anions) Surfactant, anionic (MBAs) T Tannin and lignin-like compounds, TLLC Terpenes, aqueous or solids: α-pinene, Camphene, ß-pinene, Myrcene, Δ3-carene, α-phellandrene, α-terpinene, ρ-menthene, ρ-cymene, α-limonene, ß-ocimene, γ-terpinene,α-terpineol Version: March 2012 Econotech Services Ltd. 852 Derwent Way, Delta, British Columbia, Canada, V3M 5R1 Tel: 604.526.4221 Toll Free: 1.800.463.5700 Fax: 604.526.1898 www.econotech.com Page 13 Environmental Services Contact: Jodi Murphy [email protected] 604.529.2808 Organic Halides Analysis AOX, TOX, EOX and OX Effluent Water AOX (total, dissolved or suspended) Pulp or Paper AOX (water leachable, adsorbable organic halogen) OX/TOX (total organic halogen) TX (total halogen) EOX (extractable organic halogen) Various pulp specific methods available including PAPTAC, PTS, ISO, USEPA and SCAN. Solvent, Oil, Grease, Sludge, Pulp Extractable Organic Halogen (EOX) Total halogen (TX) Version: March 2012 Econotech Services Ltd. 852 Derwent Way, Delta, British Columbia, Canada, V3M 5R1 Tel: 604.526.4221 Toll Free: 1.800.463.5700 Fax: 604.526.1898 www.econotech.com Page 14 Pulping and Bleaching Studies Contact: Sabrina Burkhardt [email protected] 604.529.2804 Sample Preparation Whole logs, woodchips and non-wood samples can be processed. Whole logs are used in specific species studies. Logs are manually debarked and chipped in our disk chipper. Pure species chips can be evaluated or mixed in specified proportions to produce a new mill chip blend for evaluation. Mill chip samples or lab produced chips can be further modified using thickness or roundhole chip screening to determine the impact of chip screening improvements on pulping operations. Wood and Chip Testing Chip samples can be classified using thickness or roundhole screens. Tyler sieve classifiers are available for sawdust samples. Chip or sawdust samples can also be analyzed for bark or rot content. The basic wood density of the samples can be determined or the bulk chip packing density can also be measured. Lab Pulping Kraft cooks can be performed in 6-L bomb digesters or in a 20-L circulating liquor digester. Bomb cooks are used to evaluate benefits of anthraquinone, surfactants and deresinating agents. Because of the small volume (6-L) in our bomb digesters, overthick chips and chip fines are removed from the chips to reduce variability in pulping results. One bomb digester cook produces sufficient pulp for an unbleached strength evaluation. Bomb cooks are also used to evaluate sawdust samples. The 20-L circulating liquor digester can cook up to 3000 grams O.D. for accurate yield determinations. Multiple furnishes can be evaluated in using the same pulping conditions for layered cooks. The 20-L digester produces enough pulp for unbleached and bleached pulp evaluations. We report total yield, screened yield, rejects, knots and residual EA for all cooks. Version: March 2012 Econotech Services Ltd. 852 Derwent Way, Delta, British Columbia, Canada, V3M 5R1 Tel: 604.526.4221 Toll Free: 1.800.463.5700 Fax: 604.526.1898 www.econotech.com Page 15 Pulping and Bleaching Studies Contact: Sabrina Burkhardt [email protected] 604.529.2804 Lab Pulping (continued) Many pulping processes are simulated in our 20-L digester including kraft, kraft/AQ, sulfite (acid and alkaline), NSSC medium, kraft liner and chemical pulping. A laboratory refiner is used in the linerboard and medium studies. Low energy batch simulations, (i.e. RDH®, SuperBatch®) and alkali profiling cooks can be run (i.e. MCC, EMCC, LoSolids cooks). Pre-hydrolysis by steam, water, or acid can also be run. Two atmospheric refiners are available for running mechanical pulping studies or determining chip brightness after refining. Bleaching Bleaching is performed in polyethylene bags or in pressurized reactors. We can simulate any bleaching process using chlorine dioxide, oxygen, ozone, hydrosulfite, peroxide, hypochlorite or chlorine. Most of our studies involve the ODEopDED or DEopDED sequences. Enzyme or xylanase pretreatment can be studied in our laboratory to determine chlorine dioxide savings. Our equipment is scaled to use 300 g of brown stock, which provides sufficient fully bleached pulp for pulp strength testing. We can generate 5 to 10 kg of fully bleached pulp for our customer evaluations. Version: March 2012 Econotech Services Ltd. 852 Derwent Way, Delta, British Columbia, Canada, V3M 5R1 Tel: 604.526.4221 Toll Free: 1.800.463.5700 Fax: 604.526.1898 www.econotech.com Page 16 Pulp, Paper, Board - Physical Testing and Related Services Contact: Sandra Fodor [email protected] 604.529.2814 Pulp Strength Evaluations PFI mill Valley Beater Canadian Standard Freeness *above evaluations will include CSF, burst, tear, tensile, bulk, tensile energy absorption and stretch Mechanical Pulp Evaluations Mechanical Pulp Handsheets including latency removal (Domtar mixer) Mechanical Pulp Evaluations using Whitewater Recirculation including latency removal (Domtar mixer) Post latency freeness (Domtar mixer) *above evaluations will include CSF, burst, tear, tensile, bulk, tensile energy absorption and stretch Bauer McNett Fiber Classification 4 fractions, +14, +28, +48, +100 mesh 5 fractions, +14, +28, +48, +100, +200 mesh (other mesh screens also available) Pulmac Shive Analyzer As received With latency removal With display sheets Duplicate runs (0.004”, 0.006” and 0.010” screens available) Handsheet Preparation British Standard Sheet Machine Version: March 2012 Econotech Services Ltd. 852 Derwent Way, Delta, British Columbia, Canada, V3M 5R1 Tel: 604.526.4221 Toll Free: 1.800.463.5700 Fax: 604.526.1898 www.econotech.com Page 17 Pulp, Paper, Board - Physical Testing and Related Services Contact: Sandra Fodor [email protected] 604.529.2814 Additional Physical Strength Tests Basis weight Britt jar fines Castor oil absorption Dennison wax pick Drainage time Fold, MIT Grease resistance Internal bond Kit level, oil absorption Klemm absorption K and N ink absorbency Modulus of Elasticity Porosity, Gurley Porosity, Sheffield Porosity, Parker Print Surf Repulpability Ring crush Roughness, Parker Print Surf Short span, dry or wet, Pulmac Shrinkage, handsheets Silver tarnishing Sizing, Hercules Size Test Smoothness, Sheffield Smoothness, Gurley Softness, Gurley STFI, Short Span Compression Fracture Toughness (In-Plane Tear) Printability MBR print indicator Version: March 2012 Econotech Services Ltd. 852 Derwent Way, Delta, British Columbia, Canada, V3M 5R1 Tel: 604.526.4221 Toll Free: 1.800.463.5700 Fax: 604.526.1898 www.econotech.com Page 18 Pulp, Paper, Board - Physical Testing and Related Services Contact: Sandra Fodor [email protected] 604.529.2814 Additional Physical Strength Tests (continued) Stiffness, Gurley Stiffness, Taber Tensile, rewetted Water absorption, water drop method Water Absorption, Cobb Water resistance, paper Water retention value Water vapor transmission rate Wet web tensile @ 30% solids Zero span tensile, dry or wet, Pulmac Dirt and Shive Evaluation Reflected light, Transmitted light Fiber Characteristics Fiber Quality Analyzer including fiber length, fiber width, coarseness, kink index, curl, percent fines and population Optical Properties Brightness, ISO, Color Touch PC Brightness, reversion @ 105 C Color, CIE, Hunter Fluorescence Gloss 75°, 20° Light scattering coefficient Light absorption coefficient Opacity Tristimulus, x,y,z Whiteness, ASTM, CIE Dominant wavelength, Purity, Luminosity Version: March 2012 Econotech Services Ltd. 852 Derwent Way, Delta, British Columbia, Canada, V3M 5R1 Tel: 604.526.4221 Toll Free: 1.800.463.5700 Fax: 604.526.1898 www.econotech.com Page 19 Pulp, Paper, Board - Physical Testing and Related Services Contact: Sandra Fodor [email protected] 604.529.2814 Fluff Pulp Properties Conditioned basis weight Fluffing, Weber hammermill Fiber damage ratio Hardness index Neps or nodules Specific volume, resiliency, absorption capacity and time Talc, Clay and Lime Analyses Bulk density, loose and compacted Oil absorption Water absorption Brightness, ISO Filler and additive evaluations Specialty Tests and Services Density Absorbency and capacity, fabric Face wire replacement (British Standard Sheet Machine grid plates) Version: March 2012 Econotech Services Ltd. 852 Derwent Way, Delta, British Columbia, Canada, V3M 5R1 Tel: 604.526.4221 Toll Free: 1.800.463.5700 Fax: 604.526.1898 www.econotech.com Page 20 Microscopy - Species and Fiber Analysis Contact: Jodi Murphy [email protected] 604.529.2808 Species Analysis: (pulp, paper and chip samples) Includes percentage breakdown of species and pulp type. We can identify all common North American pulpwoods – hardwoods and softwoods. Also experienced with samples from Europe, South America and Asia. Identification of sawdusts, wood chip and powdered products is also available. Chemical/Mechanical Pulp Content Non-Wood and/or Synthetic Fiber Determinations General Species Characterization Individual wood species, non-wood fibers (grasses, straws, cereals, synthetic, etc.) Specific types of synthetic can be identified by FTIR technique. Comparative Vessel Counts Determines the relative amounts of hardwood vessel elements between pulps in a batch of samples. Vessels can also be categorized by size or observable damage (fibrillation, fragmentation). Photomicrographs are also an available service. Cell Wall Thickness and Fiber Diameter Sclereid Identification and Count Total Sticky Area and Count Determines the amount of stickies contamination in recycled pulps and papers. Reported as total count of stickies and as total surface area of stickies per 100 o.d. grams of sample. Total Ink Count and Total Ink Area Count and measure ink particles in recycled pulps and papers. Largest, smallest and average ink particle size; as well particle color can be noted. Version: March 2012 Econotech Services Ltd. 852 Derwent Way, Delta, British Columbia, Canada, V3M 5R1 Tel: 604.526.4221 Toll Free: 1.800.463.5700 Fax: 604.526.1898 www.econotech.com Page 21 Microscopy - Species and Fiber Analysis Contact: Jodi Murphy [email protected] 604.529.2808 Contaminant Identification General microscopic examinations identify common pulp and paper contaminants like shives, bark, sclereids and foreign material like plastic or synthetic fibers. Chemical identification is further available by FTIR techniques. Photomicrographs are often a useful addition. Photomicrographs A digital camera specially mounted onto microscopes with 10X through 400X magnification allows for detailed photographs of your sample. Very helpful in demonstrating what has been observed at the microscopic level. Many applications including general pulp or fiber qualities, embedded contaminants, physical materials or debris, general print quality, etc. Particle Size by Microscopic Methodology Projecting a high-magnification microscopic image of your solid or liquid sample onto a video monitor allows for the measurement of particle diameters into any size categories you choose. Detection limit is 1µm. Asbestos Analysis Asbestos Bulk Samples – identifying asbestos in various materials like insulation, floor tiles, etc. (NIOSH 9002) Asbestos Fiber Counts – fiber counts on air samples (NIOSH 7400) SEM or TEM Analysis by Scanning Electron Microscopy (SEM) or Transmission Electron Microscopy (TEM) is arranged through subcontract. Version: March 2012 Econotech Services Ltd. 852 Derwent Way, Delta, British Columbia, Canada, V3M 5R1 Tel: 604.526.4221 Toll Free: 1.800.463.5700 Fax: 604.526.1898 www.econotech.com Page 22 Dissolving Pulp - Viscose and Acetate Testing Contact: Sabrina Burkhardt [email protected] 604.529.2804 Viscose Preparation and Evaluation Laboratory scale preparation of alkali cellulose is followed by aging to a specified end point target viscosity. Xanthation of the alkali cellulose results in the formation of cellulose xanthate or viscose. The viscose is dissolved in alkali with further aging resulting in a viscose solution simulating that used in the production of rayon. Both the slurry and sheet steeping procedures may be used. Characterization of viscose preparation and solution includes: Aging time Filterability Haze Clarity Ball fall viscosity In addition, should sheet steeping be assessed, the procedures used allow for the determination of capillary rise, sheet flotation, caustic absorption, swelling volume and density. Cellulose Acetate Preparation and Evaluation Laboratory scale preparation of cellulose triacetate is carried out by the catalyzed acetylation of conditioned cellulose. This is subsequently hydrolyzed to form secondary cellulose acetate. The secondary acetate is dissolved allowing for the determination of: Clogging constant Plugging value Haze Colour Viscosity In addition, phase contrast microscopy can be used to photograph the product and to determine the population of un-acetylated or partially acetylated fibers and the presence of particulate impurities. Chemical properties such as the Acetyl value may also be determined. Version: March 2012 Econotech Services Ltd. 852 Derwent Way, Delta, British Columbia, Canada, V3M 5R1 Tel: 604.526.4221 Toll Free: 1.800.463.5700 Fax: 604.526.1898 www.econotech.com Page 23