Hi can anyone help me with the recrystallization of methamphetamines, after separating the isomers as well as acetone washing. Every time I have the problem that no real crystals form. It was recrystallized with dcm/acetone also with h20 (7 days) . But I always get flat papers. Can anyone tell me what the problem is? The quality is good - after reagent test, it is also the right product. Thank you for your help