Even Mercks product isn't 100% pure. What you think is 90+% is probably 80%. Once you get above 90% big loses have to be taken to purify it more. Your a mile ahead if your cocaine started as 2-cmt ( ie it is synthacaine) because a lot of metabolites and isomers and precursors to benzoylecgonine methylester are only a molecule or 5 difference, but in the whole scheme of things it's going to weigh close to the same, have a similar melting point, similar reaction to acid/base, so as you go up in purity, a new level is reached and a different chemical becomes the primary adulterant, requiring a different technique, and then again, ad nauseum.
The cocaine you start with is everything. If it is cut with 10% mannitol, that's a lot easier than 10% levamisole to remove . You get your cocaine and come back and we'll show you how you can get it PRETTY CLEAN, like 95-96%. Tomreliably get much more pure than that younare going to have to get someone with spectrometry/ chromatography equipment., you get it to 99.9 with that method I suppose but it's not even viable for personal use because it take a lot of effort to recover tiny amounts of cocaine
