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 Should BAC water be refrigerated or stored at room temperature? Why Bacteriostatic Water is Essential for Peptide Reconstitution How Much Bacteriostatic Water to Add to Peptides? Prime Peptides