Melting test Obviously, all smokers know about MET hardening and most of them know how to use it. You need to pay attention to how long it takes for the crystals to melt into a puddle and begin to emit smoke. Remove the lighter flame and pay very close attention to how long it takes to crystallize this slurry. ISO melts about 200 degrees Celsius, while methamphetamine melts at 175 degrees. Smokers should immediately notice that it takes longer to melt and it doesn’t happen completely, and then when you remove the flame from the glass, the slime crystallizes almost instantly. Quality MET crystallizes in about 4-8 seconds. Body about 7-15 seconds and above.
Alkali test Take a glass or similar glass container and prepare an alkali solution in it (a means for cleaning pipes or chlorine is suitable), then take a small crystal (100mg) and throw it into the glass. Now, if you see an oil stain created on the surface, it's methamphetamine. If a crystal just sinks to the bottom, doesn't dissolve, crumbles a little, floats inside and, most importantly, doesn't leave an oily stain on the surface - that's debris.