Why Bacteriostatic Water is Essential for Peptide Reconstitution Does Bac Water Need to Be Refrigerated TikTok Bac Water Sterile Bacteriostatic Water Lab Tested Evolve Biolab UK Should BAC water be refrigerated or stored at room temperature? 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