NIJ Training Course for Firearm Examiners: Chemical Testing Technique Using the Modified Griess Method
An interactive tool used to supplement the NIJ online training course entitled 'Firearm Examiner Training', as outlined in the twelfth learning module, 'Toolmark Identification'. This brief demonstration shows an example of the Modified Griess Test by placing test paper over the evidence and is treated with a mixture of distilled water and alcohol samples.
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Opinions or points of view expressed in these recordings represent those of the speakers and do not necessarily represent the official position or policies of the U.S. Department of Justice. Any commercial products and manufacturers discussed in these recordings are presented for informational purposes only and do not constitute product approval or endorsement by the U.S. Department of Justice.