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 Injection Empower Pharmacy BAC Water 101: Stop wasting it! Here's how to properly store and reuse your Bacteriostatic Water for peptides. Keep it clean. Keep it cold. Keep making progress. Tag someone who needs this How long do you use you Bac water for? : r Retatrutide How to Store BAC Water After Opening Should BAC water be refrigerated or stored at room temperature?