A presumptive field test designed to identify THC in Marijuana dried plant material, seeds or fresh green plant. In states like Georgia where they have a Marijuana recognition course for Court purposes, this test is used in sequence with the #NARK2005 Duquenois-Levine Reagent and microscope identification. The 2nd ampoule will develop a layering tomato paste red colo indicating a positive reaction. 10 tests/box.