Storage & Reconstitution of Peptides UK Peptides Guide How long do you use you Bac water for? : r Retatrutide BAC water BioMaxx Research Should BAC water be refrigerated or stored at room temperature? Bacteriostatic Water Injection Empower Pharmacy 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