Bateriostaic Water - once used, how long is it good for
Here's my question, i'm still using the same bottle of Bacteriostatic Water that i've used for a month now. It's a 30ML multi use bottle. How long is the BW good for once first used? Is it good till gone, use within a set time from opening or what? It's constantly refrigerated.
Reason I'm asking, I was shopping for some new bac water, and on one site it said "once used, bac water should be tossed after a month". That's not correct, is it? Anyone know for sure?