Swabs or Stubs? It’s Not Even A Question

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Gunshot Residue Analysis Gunshot residue (GSR) has long been collected during criminal investigations.  Currently, the standard method for collecting primer GSR is using adhesive stubs which can then be analyzed via scanning electron microscopy (SEM).  Prior to SEM analysis, the most common method of analyzing primer GSR was atomic absorption which utilizes cotton swabs for […]

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