This test , also known as Scott Reagent / Cobalt Thiocyanate Test) can be used to test for the presence of cocaine and crack cocaine.
Strangely enough, the reagent also shows a reaction when in contact with MDPV and 5-MeO-MiPT, which are structurally totally different from eachother. Weird, huh?
We still have to find an explanation for this, but hey, it works! So we included the results in the color chart.