MDPV is a synthetic stimulant recognized as a schedule I substance. This specific field test will presumptively identify MDPV by turning a distinct Yellow to Yellow/Green color. Commonly found as a white to tan powder, this substance is being sold as everyday products like bath salts, stain remover, plant food or glass cleaner. Of the bath salt products on the market, this is the most popular chemical configuration currently and all testing should start with this specific field test. 10 tests/box.