Description
This 2-step presumptive test kit lets your students test surfaces for exposure to gunshot residue. The first step detects the presence of nitrates (the primary component of gunshot residue), and the second step detects the presence of heavy metals associated with gunshot residue.
A positive test is indicated by an immediate color change. Includes instructions and materials sufficient for 30 tests.
This item is sold and shipped to schools and businesses only. Not available to individuals or residential addresses.