How to Store BAC Water After Opening Should BAC water be refrigerated or stored at room temperature? How to Store Bacteriostatic (BAC) Water Temperatures, Do's & Don'ts, vialcase.com Should BAC water be refrigerated or stored at room temperature? Bacteriostatic water 30ml Buy Bacteriostatic Water Overnight Shipping 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