The local store sells those watercooler jugs, they are huge and the plastic seems tough as hell (like polycarbonate) and it's nice and clear too. It's plastic number is "7 Other" and I didn't see any other info. Is it safe to use? All simple observation point to yes, but I have no fucking idea.
These things also do come with caps/screws, so how would one go about keeping the capped if used for an extraction?
These things also do come with caps/screws, so how would one go about keeping the capped if used for an extraction?