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 Bacteriostatic Water 101: Comprehensive Guide to Its Uses and Storage SyringesNeedlesDepot Bacteriostatic Water 10ml Should BAC water be refrigerated or stored at room temperature? Should BAC water be refrigerated or stored at room temperature? Uses of Bacteriostatic Water for Injections and Where to Get It