So I have truly pathetic chemistry knowledge and skills. I know about acid/base extractions (the high level stuff), acetone washes, solubility and all that, but only in a truly cursory way. My problem is that I take meth daily and I've come to the conclusion that even the best meth I can get my hands on is only about 50-70% pure. The other portion appears, unfortunately, to be isopropylbenzylamine or one of its close cousins.My reasons for suspecting this aren't extensive or anything, but the cut does not seem to be psychoactively inert, it blends *beautifully* with the meth, the vaporization point is only slightly higher than meth HCl, and the shards are too brittle and break/crumble too easily in isolated sections. It's possible the cut I'm dealing with is something totally different, but iso is my best guess. So the problem is this: how the fuck do I separate my meth from this shit that dulls my mind and seems to be over time degrading my health more than the meth should be on its own?Please understand I'm not the kind of fool who thinks meth is 100% safe. I understand what I'm doing to myself. I'm looking to pay the price for the meth. Paying the price for the other shit in these shards is not part of my "acceptable cost," frame of mind. So for one, is it possible to separate isopropylbenzylamine from methamphetamine when they're so chemically similar (even the molar mass is very similar -- see http://en.wikipedia.org/wiki/Isopropylbenzylamine)?If so, can it be done by someone with access only to OTC chemicals, only basic glassware, and no real experience to speak of?Either way, even if I can't do it, I do find the science itself interesting so I'd love to learn whatever I can about the process and why it is or isn't plausible. Could someone take the time to share their knowledge? I would be truly, truly grateful. This represents my daily ritual: know that whatever time you spare could easily be doing me a world of good years down the line. I will also thank you profusely :)