Those things only signify purity though, not what substance it is. If it solidifies in a wave, starting at a few points on the edges and moving inward, then it's pure. If it solidifies slowly around the edges first, with a molten spot in the middle that gets slushy-looking before solidifying, that means it's cut. The tweaker version of this is 'crackback', where you watch methamphetamine solidify in a pipe. The closer those temperatures are together, and the closer those temperatures are to 170-175˚C, the purer the methamphetamine is likely to be. Record the temperature that you first see crystals, then record the temperature when the entire mass has solidified. (Temperature should be 180˚C+ in this state) Then shut off the heat and keep an eye on the temperature. Heat the oil with a thermometer in the shards until they all melt. you basically set up a double-boiler type system, with hot oil (mineral oil is best, vegetable oil is okay) in the outer vessel and shards in the inner one. The best test for pure methamphetamine is the melting point test. The effects are usually mild, but since there's not much methamphetamine at all in most of this bullshit that's being sold, those effects can add up. Not only are the crystals of this shit super huge and super clear, but people have to buy a lot more to get the same effect! Although not everyone has a noticeable reaction from n-iso, the people that do typically experience headaches, lethargy, listlessness, procrastination, and/or confusion. This has been happening since about February 2017. Picture source: Latest findings on n- isopropylbenzylamine Wiki-cut methamphetamine įor anyone unfamiliar, Mexican cartels have been heavily cutting the meth they make before smuggling it into the US. Copied and edited from source: from r/Stims

Pure meth crackback crawl