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NIJ Training Course for Firearm Examiners: Chemical Testing Technique Using the Reverse Modified Griess Method
Content Advisory
Please be aware that this content contains descriptions of violence that may be distressing to some viewers.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 the placement of test paper, distilled water, and alcohol over reaction layers of a DNA mixture sample, also known as the Reverse Modified Griess Test.
Disclaimer:
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.
Date Published: June 23, 2020