High precision glass refractive index measurement
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Description
GRIM®3, uses the widely accepted forensic laboratory technique for glass RI determination, the oil immersion/temperature variation method. The system operates through a standard laboratory microscope with phase contrast optics and a Mettler hotstage for temperature control. Using GRIM®3, repeat measurements produce results with a standard deviation of, typically, 0.00002RI.GRIM®3 can monitor up to four glass fragment edges per operation, speeding the casework examination process, giving improved statistical accuracy and reducing calibration time.
The GRIM3 is now available as part of the ffTA-1 modular trace evidence analysis system
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