I wouldn't go to high with the BB or BA.. One time I foolishly decided to use a plastic measureing cup just because the store I bought it at was out of glass ones so I figured plastic would be good enough, wrong! I put a few ml of BA or BB (I can't remember which one) in the plastic cup while I put the powder in the big vial, it was only there for a couple minutes; I was about to pour it in but then I noticed the Benzyl was starting to disolve the plastic!
I covered the vial, dumped the deteroratng plastic Benzyl and went out and got some proper glassware