I haven't been on this site in awhile but the molecule has been calling me. I have some naptha long forgotten in the freezer from an old stb extraction. So I was wondering if the Dmt in the naptha would still be good. Or would it now be contaminate from being in the naptha for so long. I think its been in there for like a year or so.

I don't see any reason why it would go bad unless the solvent reacted with the vessel somehow. I've had xylene eat away at lids before, so that's the only reason I mention that. If the lid looks like it's in good shape and the solvent seems clean, I'd say you're good to go.

Yeah lids are ok. Thanks for the reply