Uses of Bacteriostatic Water for Injections and Where to Get It 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 Medical Supplies IV Administration Water Saline Sodium Chloride Medex Supply Bacteriostatic Sodium Chloride vs. Regular Saline: What's the Difference? Mountainside Medical BAC STAT Bacteriostatic Saline 0.9% (30ml) 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