Hello together ! i hope this is the right forum ? At first, sorry for my english, iam not perfect and its not my mother language (; I hope your can help me ? I want to make a very good cannabinoid extrakt / hashoil, out of leaves and (pollinated) cut rests. I have read and search much of information, but no realy answer. At the moment, i make an extract with iso and wash/reextract the blackwax mit naptha (becouse naptha its more expansive and to volatile, to use it directly)… I extract the material with the solvent often i can (still the solvent ist clear) and destill the solvent with a vacuum-destillery. But the result is an black wax, too. What is the best way, to clean it, with not to much lost ? Its activated carbon an good idea ? (after or bevor the naptha-axtraction ?)….its there a big lost ? I have read about to vape the oil/wax in vacuum an to re-condense it…. Or to use an chromatography column…. But i thing a chromatography column is very smal and i have much of material…. Here are some links (i hope thats ok?): Cant You Vacuum Distill SUPER PURE Hash Oil?! Get ALL your Cannabinoids: Vacuum Vaporization | Marijuana Forums "gold THC" 86%THC Will This Make The Best Hash Oil Available? Simple Method: Isolating & Extracting INDIVIDUAL Cannabinoids... from BadKittySmiles And there are some other questions: When is the best time to decarboxylate the material ? 10-15min. and 105°C are ok ? But should i „decarboxylate“ the leaves, the iso-extract or the naptha-extract ? or better only bevor useage ? (I want to store it for a time, i the fridge) I have ethanol, aceton, naptha and isopropyl and a vacuum destillery with max. 120mbar (around 1000mbar (athmopheric pressure) – 880mbar underpressure) and an heating-mushroom up to 300°C. If it possible i like to make an liquit for e-zigarets, but primary i want to make an very clean cannabinoid extract, i fit possible. Thank you very much and best regards !