Flash Gift Now: Free BAC Water 10ML On All Current Orders, US warehouse spot stock 37 days fastest delivery, Independent production line Urgent order priority arrangement, High activity Storing BAC Water Properly for Peptide Use 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