How to reconstitute your peptides

all jokes aside, high effort thread I loved it!
I did reuse my BAC water I had opened before, but only because I used it 2 days ago for my Reta, you shouldn't reuse it if it is opened for longer than 28 days.
I do have a question though… is it really unsafe to use bac water if it’s been open for longer than 28 days? I was honestly planning on reconstituting my next vial with my opened bac water from January (sue me) but if it’s a genuine hazard I won’t risk it.