Bacteriostatic Water: Handling Notes for Research Use

Bacteriostatic water for injection is sterile water preserved with 0.9% benzyl alcohol, which inhibits microbial growth in multi-use vials.

Storage

Once opened, BAC water remains usable for up to 28 days at room temperature. Date the vial on first puncture.

When to choose alternatives

For peptides incompatible with benzyl alcohol or for single-use applications, sterile water for injection or 0.9% sodium chloride may be more appropriate.