Check out this, mention of a CLS in '00.
Re: Supercritical fluid... Bookmark
Ok, pHas3d, it looks so as if you can't find it on your own, here's some help:
Post 100222 (The Other Side: "Gas extraction. Help", Chemistry Discourse)
And do me a favor, TRY it, and perfectionise the whole thing, take a 200 L thick walled drum or cylinder and use a lot of the most idiot bigg-ass butane-gas cylinders you can find, and a little tip, there are gasses which even work better, but some intelligent field work is also expected from you here.
Use only thoroughly dried plant material!
And you CAN recycle your gasses, no need to let them escape in thin air, use your McGyver thingy feeling.
I allready told you what your reward CAN be, so go for it.
And Gyrogearloose is a fuckin genius, I'll tell you. No schools, just naturally gifted !"