Note that no weight was lost at all during wash. One batch measured 1gr pre wash, second batch measured 3.5g pre wash. Methamphetamine abuse has three patterns: low intensity, binge, and high intensity. Below are some photos of the Fake Meth: 1 One Sample Before Wash 2 Two different batches after Dry Acetone wash. Low-intensity abuse describes a user who is not psychologically addicted to the drug but uses methamphetamine on a casual basis by swallowing or snorting it. I don't know what 'jump' is, but I have injected meth and coke/crack before. Obviously some patterns work better against certain defenses. S e rv i n g t h e p u b l i c s i n c e 1 878. w i n n e r o f 1 8 p u l i tz e r p r i z e s. Purity -Crystal meth crackback patterns - any relation to. Try grabbing a clean pipe and melting it down till right before it starts smoking and watch it recrystalize two things to check for here first check out the crack back, it should crack in a feather pattern, with branches etc, if it gets circles or anything else its no bueno. The pattern that is created is different depending on how pure the meth is and what it is cut with. Whatever the additive is though, it will take longer for the ice to return to a solid state than if there were no additives, just pure meth. Pure meth has a sort of fractal crackback pattern that originates from one point and shoots out. The following are some of the things to know about the difference between crack and meth: Probably the biggest difference between crack and meth is the fact that crack is a very short-term drug. You feel extremely euphoric, but only for a few minutes. On the other hand, the effects of meth last much longer.
