acetone wash step by step picture guide
carefully remove filter paper from funnel and fold the top and sides, place paperclip to hold in place. put filter now holding your clean strong crystals on a clean surface and press down on the clump, place under gentle heat lamp for 10 minutes then leave in a cool dry place for 24 hours. carefully open filter over ceramic plate and use toothbrush to gentle brush off any crystals stuck to the filter paper. done!