Eventually, the stuff in the tube will melt, and when it does, insert the thermometer. Wait for it to all melt, then turn off the heat and start monitoring the temperature. As soon as it starts to form crystals, make a note of the temperature.
Pure methamphetamine should begin crystallization between 170˚C and 175˚C, and with cut methamphetamine this would happen at a lower temperature. If it's pure, this temperature should not change much at all during solidification. If it's highly-cut, then this number will be about ten degrees lower by the time it's fully solid. When it does recrystallize, if it's methamphetamine, the crackback pattern will be a bunch of disjointed, jaggedy lines or a sheet of white, instead of clear fractals like you have with methamphetamine.Īlso take notice of the taste and odor, of course. Pure meth has a very specific flavor that seasoned users will come to know and be able to discern. If it ever tastes bad, acidic, like plastic, etc.you can probably assume it's cut (unless you're just burning your product). Meth vapor should also have little to no odor associated with it.