Bacteriostatic Sterile Water for Injection, 30mL, 25 pack Med Vet International Bacteriostatic Water (BAC Water) 10ml Sterile Diluent for Injections Purepeptix 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 Not all reconstitution waters are the same Different waters can impact stability, preservation, storage, and overall peptide integrity. That's why understanding the differences between BAC water, saline, sterile water, and AA DID YOU KNOW? Bacteriostatic Water contains 0.9% benzyl alcohol, which prevents bacteria from growing after the vial is opened. This makes it safe to use for up to 28 days once punctured