It occurs to me, I've never seen a list of 100% reliable methods for "suggesting" how good meth is. What I mean to say is that there are some little things that guarantee meth is awful when not present, but there's nothing I know of that guarantees it's good if it is present. If anybody wants to add or dispute my personal list, please do. That's part of the power of SR -- we're free to share information and get to the bottom of things where the truth is at.We're scientists, not addicts. C'mon guys, put your lab coats on! ... I can just see us all sitting alone putting lab coats and goggles on to type up posts... or maybe it's just me doing it and I'm the only idiot -- either way, it's funny in my head sometimes :P List of signs that, if they are NOT present, means the meth CANNOT be pure:1. If it isn't super bitter, it has to be cut. I mean fucking BITTER. Reasoning: Methamphetamine tastes TERRIBLE. It's very unpleasant, and the taste is more bitter and worse than amphetamine (oddly), IMHO. If what you've got doesn't taste bitter, then there's enough of something else in there to dilute it or distract you (pure unsweetened chocolate tastes nasty, but put enough sugar in it and you get the stuff everybody loves -- same situation here, SOMETHING has be to be diluting that nasty-as-Hell taste).2. If it doesn't melt at 165-170 degrees celsius, then what you're melting has impurities in it. Period. Reasoning: the methamphetamine molecule melts at 165-170 degrees; well, it does at sea level anyway, but let's just leave that kind of hard science out of this, lol... if you live on fucking Everest or something though, I have no clue what you should see and you need to ask somebody who actually knows chemistry.List of signs that, if they ARE present, means the meth is pure:1. None.......... and that's it. Yes, believe it or not, the guy who has a fucking daily habit has no further signs to list off. Those are the only two I know of. EVERY other tell I have seen exceptions to. Anybody else chip in?