Froehde Reagent Test Kit
The Froehde reagent is important in testing opioids but also has good use in detecting substances commonly mis-sold as MDMA such as 5/6-APB & a variety of other substances.
It contains Molybdic acid in Sulfuric acid.
100+ tests per bottle.
Consider upgrading to the Complete Test Kit to narrow down what your sample is.
It’s worth knowing.