How to Store Bacteriostatic (BAC) Water Temperatures, Do's & Don'ts, vialcase.com Bacteriostatic Water 101: Comprehensive Guide to Its Uses and Storage SyringesNeedlesDepot Should BAC water be refrigerated or stored at room temperature? How to Store Bacteriostatic Water Safely Confused about whether BAC water needs refrigeration after opening? According to USP standards and Pfizer's own guidance, both room temp (2025C) and refrigeration are acceptable