Marquis Reagent Test Instructions

The Marquis reagent on its own is colorless. It’s best to use Marquis reagent to test MDMA, MDA, 2C-B, cocaine, meth/amphetamine, or opioids, but it’s also a good test for benzofurans, cathinones, tryptamines, and phenethylamines. NOTE: Marquis can only test the PRESENCE, not PURITY or QUANTITY of a specific substance.Always test under a strong light […]