Disclaimer: I've never cooked enough to even be able to tell if I ended up with meth at all.That said, I like science and have read a lot of stuff. Ever thought about H3PO3 instead of RP? The birch reaction apparently can be problematic (regarding your question of lithium, not the RP thing you're doing). Now obviously if you know what you're doing, power to you, but at 40g RP + unspecified I2, aren't you bumping against enough phosphine gas being produced to kill somebody who carelessly takes a breath without making sure the ventilation has been going the whole time...?And where the Hell are you getting that much I2? I mean I'm not trying to steal your source or something, lol... but you don't mention it and just because you don't have to scrape matchbooks for it doesn't mean that much isn't a bitch to find.