Fen-Her Fentanyl/Heroin Test Kit - 5 Tests

The Fen-Her kit is a new, safer and highly accurate kit for the presumptive identification of fentanyl, fentanyl derivatives, and heroin. Safer because the sample pen needs just a trace amount of material - samples can be taken from residues on paraphernalia such as spoons, pipes, and edges of plastic bags, etc. Accurate because color appears in different locations on a test card eliminating confusion between heroin, fentanyl & derivatives. Separates common cutting agents and adulterants such as diphenhydramine (Benadryl).