I'm interested in obtaining information and small scale equipment sourcing for supercritical extraction of cannabis. For those who are unfamiliar this process uses C02 at low temperatures (when it becomes liquid) pumped under pressure through a pressure vessel with the sample in it to do the extraction. It can be combined with other solvents or used alone. I'm trying to rig up an inexpensive system that would process cannabis. Is C02 sufficient to do the extraction or do you need an additional solvent as well? Where can I find the equipment? I know about Eden Labs but they want 70.000 for a 20 liter unit. I think I can piece it together cheaper. Any information or ideas?