Washing methamphetamine with acetone is a common procedure used to remove impurities, but it is critical to use anhydrous (water-free) acetone
Recommendations
In most jurisdictions, the possession, manufacture, or chemical alteration of methamphetamine is a serious felony. "Washing" or "recrystallizing" a controlled substance is legally categorized as manufacturing or processing, which often carries harsher penalties than simple possession. Envirofluid Seeking Help washing meth with acetone free
If someone is absolutely determined to purify a substance (which we do not advise), the scientific literature points to recrystallization from hot isopropyl alcohol, not acetone washing. However, that requires even more skill, hotter solvents, and longer times. Washing methamphetamine with acetone is a common procedure
Detergent and Water: Standard cleaning procedures for contaminated environments often involve multiple washes with specialized degreasers or detergents. These solutions help lift residues from non-porous surfaces so they can be rinsed away. However, that requires even more skill, hotter solvents,