Bacteriostatic water dosage for bpf 157 and tb 500 mix? Should BAC water be refrigerated or stored at room temperature? BAC Water Advanced Research Should BAC water be refrigerated or stored at room temperature? Bacteriostatic Water for Injection USP Hospira Pfizer 30mL 25 Pack Mountainside Medical 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