Sirchie Nark Duquenois Reagent

This presumptive test is designed to identify THC in Marijuana. This original chemistry was the foundation for the three ampoule Duquenois-Levine (more specific) but is recognized as an excellent test for THC. The 1st ampoule should be agitated for sixty (60) seconds. No color should develop (THC is a clear colored substance). If a color does develop, you may have a false positive. The 2nd ampoule with show a very fleeting flash Green color before developing a definitive midrange Purple. Like all our NARK narcotic field tests, the Mayers Reagent is meant for presumptive field drug testing. 10 test/box. Like all our NARK narcotic field tests, the Duquenois Reagent is meant for presumptive field drug testing. NOTE: ALL TEST RESULTS MUST BE CONFIRMED BY AN APPROVED ANALYTICAL LABORATORY! The results of this test are merely presumptive. NARK® only tests for the possible presence of certain chemical compounds. Reactions may occur with, and such compounds can be found in, both legal and ille