Scanning electron microscopes in forensic and crime laboratories play many roles, including gun shot residue analysis (GSR) used to determine the chemistry of particles collected from firearm suspects. These analyses frequently run for several hours and prevent other SEM uses. The ideal solution is a dedicated and cost-effective desktop SEM for GSR analysis such as the Thermo Scientific Phenom Perception GSR Desktop SEM.
In this webinar we detail the Phenom Perception GSR software workflow used in compliance with ASTM and ENFSI guidelines. The webinar covers the accuracy of the instrument and outlines the critical requirements for an effective SEM for gunshot residue analysis.
We show how users can collect results from up to 30 samples in a defined recipe, scan each sample frame-by-frame, measure particle morphology at high magnification and examine each particle to classify via EDS. We also review an important step in revisiting the sample to confirm the chemistry of the GSR particle. Afterwards, the user generates a report to be presented as solid evidence. Maximum efficiency with minimal effort.