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?

ive used bac water that had been sitting in a drawer for about a year after first using it. The remaining amount was just the same as when i used it when it was brand new. the BA keeps it sterile

juicespringsteen said:

ive used bac water that had been sitting in a drawer for about a year after first using it. The remaining amount was just the same as when i used it when it was brand new. the BA keeps it sterile

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Same thing with me, I have been using one for six months with no problems, plan to use it until the expiration date.

In the past 7months I've gone through 1 30ml vial and half if another 30ml vial and all is well.