How to use a reagent test kit: if you intend to use a synthetic psychoactive substance, first you need a test kit to check it for adulterants. Chemicals can’t be identified by appearence. To test use reagent tests like Marquis, Mecke and Froehde in single-use or multiple-use test kits. Using a set with different reagents helps detect adulterants – 90% will react with 1 out of 3 reagents, and 95% with 1 out of 5.
Reagents presumptively indicate PRESENCE, but not PURITY or QUANTITY. A positive or negative test result does not mean that the substance is safe. No substance is 100% safe.More