Bacteriostatic Water Bac Water by Hospira Mountainside Medical Pfizer Hospira Bacteriostatic Water 30 mL Peptide Test Hospira BAC Water 30 mL Buy Now at Aus Aminos 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 Hospira brand 30ml Bacteriostatic Sterile Water for Injection Bacteriostatic Water Injection by Hospira, Multiple Dose Vials 30 ml 25 Pack (Rx)