Uses of Bacteriostatic Water for Injections and Where to Get It Uses of Bacteriostatic Water for Injections and Where to Get It Does Water Expire? Shelf Life, Safety, and Smart Storage Explained The Environmental Blog 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 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