When extracting in the sticks in the sticks you are forced to learn… one thing I’ve learned is that the propane/propylene mixture in your lp tanks is suitable for extraction if you treat it properly.
Neutralization of mercaptans from cheap “Propane” is a simple process.
Copper scrubby pads have this twisted loop (I hit it with a black sharpie so you can see what I’m talking about) that holds them together, if you untwist them and then unroll them you get a big copper sock like this.
I like to unroll two copper scrubby pads and stuff an unrolled copper pad into one of the socks like this
Then I slide this sock into the other unrolled sock like this.
Then I fold it in on itself
Then once more
Perfect for stuffing like 10 of these into a 3" column.
Distilling gas station propane through that column will neutralize all the mercaptans.