Speaking of safe container practice, it’s customary to bring up that whole episode with the acetone wash bottle. VWR provides LDPE squirt bottles with pre-printed label (there must be some sort of philosophical paradox with labeling your solvent squirt bottle with sharpie–only to have it be washed off by the content). It says on their website that these are for SHORT TERM DISPENSING only and not STORAGE. After exposure to various organic solvents, old wash bottles become weak and brittle, and is likely to shatter when squished, as played out in one unsurprising LBNL episode.

Of course, one freaked out undergrad resulted in the banning of said wash bottles. All I can say is I’m glad I’m not the one doing acetone rises out of amber bottles.