I was thinking last night as i mused over some chemistry work that a reasonable easy mdma purity test could be done with a titration.
1.weigh out 1g (not that much, i'm just using it for example) molly/crystal/maybe even a pill and dissolve in water (or perhaps an organic solvent?)
2.Find a compound that will react with mdma specifically. Mdma is a amine so possibly a de-amination reaction, anything that we can measure, ie pH change, colour change, visible reaction (it no longer reacts after X amount of other compound is added)
3.do a titration, surely there is a method not requiring lab equipment.
4. do the maths and get a rough estimate on the quantity and hence purity of the mdma
Would this work? i cant see why it wouldnt other than there being multiple reactions with the impurities or a multi-stage reaction with the mdma and its derivitives.