Gunshot Residue Presumptive Test Kit
Gunshot Residue Presumptive Test Kit
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Gunshot Residue Presumptive Test Kit

Colorimetric Test for Trace Evidence. This simple, two-part presumptive test will help you quickly determine whether or not a surface has recently been exposed to a discharged firearm. Simply wipe down the surface in question, add the chemical reagents, and observe the results. A rapid color-change takes place to verify the presence of nitrates, the main component of gunpowder residue (GSR), while a different color change will verify the presence of heavy metals associated with GSR. Each kit contains complete instructions.


  • Simple and quick process
  • Enough materials to perform 30 tests