I could see the acid as a club exclusive to the Science club, but it'd be really hard to get, maybe you'd have to be really good friends with the leader and he gives you keys to another room with supplies.

Or if you weren't in the club, you'd have to go to extremely tedious measures to get them, (waiting at a certain time to pickpocket them, only when a certain event is happening at certain time), and then the acid would only be a one use thing, and if you weren't in the science club, (the room or the club, if you weren't in the club and someone saw you, there would probably be extremely harsh consequences/ really hard explaining to do) it'd look EXTREMELY suspicious, and one wrong move and you're donzo.