FFTA - Pathtech Brochure 2013

FF:05/13
ff TA
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A MULTI-FUNCTIONAL SYSTEM FOR
FORENSIC TRACE EVIDENCE ANALYSIS
RAMAN SPECTROSCOPY
GLASS RI MEASUREMENT
FLUORESCENT IMAGING
IMAGE PROCESSING
MICRO-SPECTROSCOPY
LIGHT POLARISATION
For the examination of forensic trace evidence
including: glass, paint chips, fibres, inks, drugs,
gun shot residues, accelerants and explosives.
foster + freeman
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ffTA
A neW concepT in TrAce eViDence eXAminATion...
a new concept from Foster + Freeman...
a system that provides a range of analytical facilities on a single microscope
Built around the Leica DM2500 laboratory microscope, the ffTA is a unique modular system that allows the user to add functions to
meets specific laboratory requirements. Using an optical multiplexer the operator simply switches the image from one module to another.
ffTA modules are available for the following applications:
glAss ri meAsuremenT
Analysis and grouping of glass fragments
rAmAn specTroscopy
For the study of materials including paint chips, fibres, inks, and drugs
fluorescenT imAging
Identification of biological samples, chemicals, and illegal substances
imAge processing
Enhancement and comparison of images captured using a 5MP digital camera
micro-specTroscopy
Non-destructive analysis of organic compounds including paint and fibres
lighT polArisATion
For the examination and identification of natural and synthetic fibres
The unique modular configuration of the ffTA enables new modules to be seemlessly integrated with the users existing system at any
time.
To configure a ffTA system that meets your laboratory’s unique application requirements please contact your local
foster + freeman sales representative or send an email to [email protected]
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Raman Spectroscopy
for the comparison and identification of materials
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A NEW CONCEPT IN TRACE EVIDENCE EXAMINATION...
Raman Spectrometer
Match Spectrum: Recrystallised RDX
Percentage Match: 93.5%
Search Spectrum: Unknown explosive material
Raman Shift (cmo1)
Match Spectrum: Methamphetamine
Percentage Match: 93.7%
Search Spectrum: Suspect Methamphetamine
Raman Shift (cmo1)
Required Components
ffTA Essentials
Leica DM2500 microscope
High specification PC
HP Deskjet printer
Foram X1 and X3 Raman module
Either one or three laser wavelengths:
532nm, 638nm and 785nm lasers
Spectrometer range, as close as 200 cm-1 to
the excitation laser wavelength, and up to
4200 cm-1
Raman spectroscopy is a powerful analytical tool that is widely used in forensic science for
the study of a variety of organic and inorganic materials including paint chips, fibres, inks,
controlled substances, precursors, pesticides as well as residues from explosives,
flammables and accelerants.
Through the analysis of Raman spectra, specific to molecular structure, this powerful module is
able to provide valuable "fingerprints" for comparing, differentiating and identifying materials.
By installing the wide range of databases that Foster + Freeman offer, ‘unknowns’ can be
identified, as many substances produce unique Raman signatures.
x5, x10, x20, x40
Equipped with a choice of one or three laser wavelengths 785nm (invisible), 638nm and 532nm,
the Foram X3 module is a uniquely versatile device. High levels of sensitivity can be achieved
with the 532nm laser, while the 785nm, infrared laser is better able to suppress fluorescence.
A balance between power and sensitivity can be achieved through the use of the 638nm laser.
Incident illumination package
Raman Spectroscopy features include:
5MP digital camera
• Non-contact, non-destructive analysis of trace materials and inks
400-700nm spectral response
• Analysis of materials in solid or liquid form
NIST calibration standards
• Rapid examination with minimal sample preparation required
Leica DM2500 objectives
for 758nm and 532nm lasers
Optional XY stage
for the examination of questioned documents
VISIBLE AND INVISIBLE
LASER RADIATION
AVOID EXPOSURE TO BEAM
CLASS 3B LASER PRODUCT
Raman databases available include:
Materials of Forensic Interest Spectra; Hazardous Chemicals Spectra; Pharmaceuticals,
Drugs & Antibiotics; Minerals and Inorganic Materials etc.
Contact [email protected] for a list of all available databases
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Glass RI Measurement
for the forensic discrimination of glass
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A NEW CONCEPT IN TRACE EVIDENCE EXAMINATION...
Glass RI Measurement
Above: Calibrated measurement, Below: Multiple edge measurment
Required Components
ffTA Essentials
Leica DM2500 microscope
High specification PC
HP Deskjet printer
GRIM 3 glass RI measurement module
Monochrome firewire video camera
GRIM 3 software package
Phase ring x10 objective and
focusing telescope
x5, x10, x20, x40
Interference filters
488, 589, 656nm
Mettler FP82HT hotstage
Inclludes hotstage fixing bracket
Reference oils and glasses
Set of 3 purified silicon oils and 19 glass
standards to cover the refractive range.
The ffTA GRIM system determines the refractive indices of glass using the oil immersion
/temperature variation technique.
ffTA GRIM features include:
• Multiple edge measurement technology
• Enhanced casework documentation
• Calibration
• High level of temperature stability
The oil immersion/temperature variation technique is a widely accepted method of determining
glass RI. By varying temperature to alter the refractive index of a calibrated oil, the RI of an immersed fragment of glass can be determined at the point of null refraction, the point at which the
refractive indices of glass and immersion oil match. Using ffTA, repeat measurements produce results with a standard deviation of, typically, 0.00002RI over a 5 hour period and 0.00003RI over a 5
day period.
Glass Fragment Analyser
The ‘Frag Analyser’ is a software module that provides an interpretation tool to assist forensic
experts in evaluating the results of Glass Refractive Index Measurements.
The software includes two grouping algorithms and two match test options providing the glass
expert with the flexibility to select the most appropriate approach for their laboratory's quality
requirements.
Features include:
• Interactive graphical display of results
• Agglomerative (ELM2) and divisive (SKM2) algorithms
• Reports providing details of all RI values and calculations undertaken
The software, designed to work with data from the ffTA GRIM system, can also import results
directly for GRIM 2 and GRIM3 data files whilst also providing support for alternative data sources.
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Micro-Spectroscopy
analysis of organic compounds including paint and fibres
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A NEW CONCEPT IN TRACE EVIDENCE EXAMINATION...
Micro-Spectroscopy
Spectral resonse of a suspect fibre (above), cluster analysis (below)
Required Components
Micro-spectrometry is a powerful analytical tool that is widely used in forensic science for the
study and comparison of trace materials including paint chips, fibres and inks.
ffTA Essentials
Leica DM2500 microscope
High specification PC
HP Deskjet printer
240-1000nm spectrometer module
or
240-830nm spectrometer module
or
400-1000nm spectrometer module
Leica DM2500 objectives
x5, x10, x20, x40
Incident illumination package
5MP digital camera
400-700nm spectral response
Optical multiplexer
1x input, 3x selectable outputs
NIST traceable filters
Labspere colour measurement
calibration standard
Spectra in the visible region provide the user with objective measurements of colour and through
the examination of ultra-violet and infra-red spectra, users are able to make comparisons
between two materials that may be indistinguishable to the naked eye.
An integrated statistical analysis package offers the user further tools for discrimination.
The micro-spectrometer is available with three wavelength ranges:
•
•
•
240 – 1000nm; from UV through to IR
240 – 830nm: from UV to near IR
400 – 1000nm: Examination in visible and IR
Features include:
• Fast, non-contact, non-destructive analysis
• Transmittance and Reflectance micro-spectrometry
• Optional fluorescence spectroscopy with the Fluorescence Imaging module
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Image Processing
Enhancement and comparison of high resolution images
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A NEW CONCEPT IN TRACE EVIDENCE EXAMINATION...
Image Processing
Comparison of suspect fibre (above) and paint chip under analysis (below)
Required Components
ffTA Essentials
Leica DM2500 microscope
High specification PC
HP Deskjet printer
Leica DM2500 objectives
A comprehensive module for processing images from the scientific grade 5 million pixel CCD
colour camera mounted on the ffTA optical multiplexer.
Functions available in the image processing software suite include:
Image Enhancement
• Functions include: Contrast stretch, HSL, RGB, Filters, Equalization, FFT,
Gamma Correction, and Sharpen.
x5, x10, x20, x40
Incident illumination package
5MP digital camera
400-700nm spectral response
Image Analysis
• Measurement facilities for distance, angle and area measurement, calibrated grids, user
definable grids. Measurements can be added to image.
Image Annotation
• Editable image annotation facilities (text and shapes including arrows, lines, boxes and
circles)
Image Comparison & Transformations
• Side-by-side comparison of live and stored images on a vertical or horizontal split screen,
user adjustable split position
• Superimposition and subtraction of live and stored image (option of red/green rendered
images for extra clarity)
• Live and stored images can be rotated through 90o
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Extracting suspect fibre for examination
Fluorescence Imaging
visual comparison of evidence across multiple wavebands
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A NEW CONCEPT IN TRACE EVIDENCE EXAMINATION...
Fluorescence Imaging
Absorbance - Full range
Absorbance - Visible
Required Components
ffTA Essentials
Leica DM2500 microscope
High specification PC
HP Deskjet printer
Transmission - Full range
Fluorescence examination is a widely used technique in forensic science for the identification
and comparison of trace materials including paint chips, fibres and biological materials.
Equipped with four excitation bandwidths: UV, violet, blue and green, the Fluorescence Imaging
Module offers versatility.
Features include:
•
High quality imaging through a 5MP colour camera
x5, x10, x20, x40
•
Optional fluorescence spectroscopy when used with Microspectrometer module
5MP digital camera
Fluorescent imaging enables visual comparion of samples in different wavebands and adds
another technique to the forensic trace analyst.
Leica DM2500 objectives
400-700nm spectral response
Metal halide lamp
Forensic Applications
External fluorescent light source
• Identification of illegal substances
or
Mercury vapour lamp
• Examination of accelerants (petrol, diesel, kerosene etc.)
External fluorescent light source
• Imaging of biological samples
Fluorescence calibration standard
Additional Applications
• Anatomical pathology: Diagnosis through live cell imaging
• Agricultural: Inspection of agricultural material
• Industrial: Inspection of circuit lead bonds
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Light Polarisation
examination and identification of natural and synthetic fibres
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A NEW CONCEPT IN TRACE EVIDENCE EXAMINATION...
Light Polarisation
Interference colour chart
Required Components
ffTA Essentials
Leica DM2500 microscope
High specification PC
HP Deskjet printer
Leica DM2500 objectives
x5, x10, x20, x40
5MP digital camera
400-700nm spectral response
Polarised light module
with rotary polarization stage
Primarily used for the examination of the cross polar birefringence of fibres, the ffTA Polarised
Light Module can also be used for the analysis of chemical crystals (e.g. caffeine) rocks and
minerals.
Evidence identified by its birefringence.
Birefringence is the decomposition of a single ray of light into two separate rays as it passes
through birefingent materials. By taking a measurement of the samples diameter and the colour
retardation of the decomposed light, unknown materials can be identified against the
interefrence colour chart (pictured inset).
The ffTA Light Polarisation Module consists of a linear polariser mounted on the condenser lens,
a second polariser (the analyser) placed in the optical pathway before the observation tubes and
camera, and a retardation plate to enhance optical path differences between the
cross-polarisers. Specimens are placed on a 360-degree circular rotating specimen stage
equipped with two vernier scales so that rotation angle can be measured to an accuracy of 0.1
degree.
Light Polarisation module applications include:
• Detect the presence of fibres, crystals, and soil etc.
• Determination of mineral content of rock chips and soil
• Identification of natural and sythentic fibres
• Toxicology and drug analysis
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A NEW CONCEPT IN TRACE EVIDENCE EXAMINATION...
Modules & Components
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5
6
12
10
1
9
2
7
ffTA system modules and components
1. Raman spectrometer module
2. GRIM 3 module
3. Micro-spectrometer module
4. Fluorescent Imaging light source
5. 5MP CCD camera
6. GRIM 3 FireWire video camera
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11
7. DM2500 Microscope
8. Optical multiplexer
9. DM2500 objectives
10. Incident illumination package
11. GRIM 3 hotstage
12. PC and flat screen monitor
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3
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A NEW CONCEPT IN TRACE EVIDENCE EXAMINATION...
Modules & Components
FFTA ESSENTIALS
Leica DM2500 Microscope
Leica DM2500M RL/TL stand 12V 100W, stable
2-step focusing drive
5 way nose-piece
ErgoStage with ceramic plate
XY stage control standard
Ground plate
Phototube switchable output trinocular
Lamp housing 107/2, 12V 100W, 1-lens
PC (minimum specification)
Intel Quad or i5 equivalent
4GB RAM
500GB SATA HDD
DVD-RW Drive
FireWire 800 port
Windows operating system
Monitor
24” flat panel (LCD) colour TFT monitor
Printer
HP Deskjet 8000 printer
DM2500 OBJECTIVES
x5, x10, x20, x40, x52
For use with ffTA 5MP camera or Micro-spectrometer
OPTICAL MULTIPLEXER
fixes to DM2500 phototube
Raman Spectrometer
UV-VIS-IR Spectrometers
Lasers
240-830nm
532nm (nominal) diode pumped solid state laser,
Maximum output 8mW
Range 240 – 830 nm, pixel resolution ~ 0.6 nm,
FWHM resolution better than 1.98 nm
UV microscope objective
Light source to cover range 240-1000nm
UV calibration standards
Spectrometer data processing software
638nm (nominal) stabilised laser,
Maximum output 9mW
785nm (nominal) stabilised laser,
Maximum output 80mW
Spectrometer
240-1000nm
As close as 200 cm-1 to the excitation laser
wavelength, and up to 3200 cm-1 (Foram X1) and
4200 cm-1 (Foram X3)
FWHM resolution, better than 5 cm-1 at 785nm
Low elation CCD detector with Peltier cooling
Peak Quantum efficiency of greater than 90%
Line binning and area read out of the detector
Range 240 – 1000 nm, pixel resolution 0.77, FWHM
resolution better than 2.54 nm
1024 pixel, low etalation, Peltier cooled backthinned CCD detector
UV microscope objective
Light source to cover range 240-1000nm
UV calibration standards
Spectrometer data processing software
Software
Switch between laser wavelengths
Chemometric comparison and data processing
routines
Automated background/fluorescence algorithms
Label and annotate spectra
Customised spectral library creation tool
Commercial Raman spectra libraries available
Inbuilt ASTM automatic calibration standard
Optional NIST calibration standards
GRIM 3 Processor unit
Class 3B laser instrument
Keyswitch and remote interlock for 785nm laser
USB and FireWire connections for hotstage control.
Incorporating improved accuracy and temperature
stability.
Light Polarisation kit
CCD CAMERA
52mm mounted linear polariser
Mounted analyser
Waveplate & quarter waveplate
Polarisation rotary stage
FireWire Video Camera
AVT Stingray monochrome
Software
GRIM3 and FragAnalyser software supplied on
CD-ROM, Windows compatible
High resolution 5MP CCD camera
Leica incident illumination package
Illuminator for RL, 4-fold IND
Reflector BF fixed, Reflector DF fixed
Lamp housing, 12V 100W, 2 lens 0.55mm
Power supply 12V, 100W stab
Australian Distributor:
Pathtech Pty Ltd
www.pathtech.com.au
1800 069 161
[email protected]
Glass RI Measurement Module
Safety
fixes to DM2500 microscope
INCIDENT ILLUMINATION
Range 400-1000nm with a sub-5nm resolution and
a sampling area from 1.5-12microns diameter
Filter magazine for transmitted light
Colour correction filters 35&40mm diameter
Spectrometer data processing software
Calibration
1x input from microscope
3x selectable outputs
400-700nm spectral response
On-chip image integration
Approximate magnification range of x310-2500 at full
resolution (using x5 - x40 objectives)
Fields of view: 1.5mm x 1.2mm to 0.21mm x 0.15mm,
using x5 - x40 objectives.
400-1000nm
Phase ring & Focusing Telescope
Calibration Standards
Objective - Hi Plane 10x
Focusing telescope for PH and ICT
Colour measurement
Labsphere SRS-99-010 Spectralon® 99% Diffuse
Reflectance White Reference Calibration Standard
Interference filters
Fluorescence
488nm, 589nm and 656nm interference filters
(50mm diameter)
Calibration standard for DM2500 microscope
Hotstage
NIST
Mettler FP82HT hotstage
NIST traceable ND, Holmium & Didymium filters
for use with Microspectrometer.
NIST correction standard for 785nm & 532nm
Raman spectrometer lasers.
Reference Oils & Glasses
Set of 19 reference glasses
Set of 3 purified silicon reference oils
fosterfreeman.com