You list that it could be .15% different in this reply when in the other it’s listed as having a 0.015% variation. There’s a very real difference between those numbers (a 10x differential in fact). I second the other posting in thinking you’re absolutely full of crap. People have been smoking iso hash for decades and there are still 0 deaths associated with it. Safe to say that it’s safe to use dumb dumb. Edit: I know this is a very old thread but I had to reply to this load of absolute bull crap. First to third grow. From beginner to novice lol.