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NIJ Training Course for Firearm Examiners: Chemical Testing Technique Using the Reverse 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 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. 

Date Published: June 23, 2020