Extraction Tube

[Graywolf]

That looks like galvanized steel, won't the butane leach off that?

And the cap appears to be PVC, which is rated only fair for N-Butane.

A good site to check for chemical compatibility is Cole Palmer Chemical Resistance Data Base at:

www.coleparmer.com/techinfo/chemcomp.asp -

 

[rusty]

or u can run to the hardware store and make one of these… like right now ;)