Hospira Issues A Voluntary Nationwide Recall for One Lot of Sterile Water for Injection, USP, Due to the Potential Presence of Visible Particulate Pfizer 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 Bacteriostatic Water 30mL Hospira USP IDUN Peptides Bacteriostatic Water for Injection PFIZER Abbotsford BC Pfizer Hospira Bacteriostatic Water 30 mL Peptide Test