Cannabis Science Inc (fka CBIS)

[SNJgrower]

If you had any intelligence, you wouldn't be using butane.

It's funny you say that because CBIS uses butane for their extractions (http://investorshub.advfn.com/boards/read_msg.aspx?message_id=56890737). Butane is by far the safest hydrocarbon and extracts made from it are 99.9% free of butane because butane evaporates at room temperature. The residual butane is cooked off when brief heat is applied. You inhale a hell of a lot more butane using a standard lighter. I've used isopropyl alcohol, butane, naphtha and CO2 and I have to say that butane and CO2 are the best and safest way to make extractions. Rick Simpson uses naphtha and his oil isn't very pure, plus naphtha is nasty.