Ntchito zazikulu ndi mawonekedwe ake:
Zigawo zazikulu za chotsitsacho ndi CH₂Cl₂, mafuta oyera ndi kufufuza madzi. potengera maphikidwe osiyanasiyana owiritsa a zinthu zitatuzi, chotsitsacho chimachitika motsatira njira zingapo, monga distillation yoyamba, atmospheric distillation, vacuum gas extraction, CH₂Cl₂ ndi kusefera kwamafuta oyera. njira yotulutsira inalekanitsidwa ndikuyeretsedwa kuti ibwezeretse CH₂Cl₂ (kuyera> 99.97%) ndi mafuta oyera (kuyera> 99.97%) kuti akwaniritse zofunikira zogwiritsidwanso ntchito pamzere wopanga ndikuchepetsa kugwiritsa ntchito zinthu zopangira. Chepetsani mtengo wopangira filimu yolekanitsa.