CANLABS: Does BAC Water Expire? Have had for a year in fridge. : r Peptides Why Is There an Expiration Date on Bottled Water? It's Not About the Water Does Water Expire? What You Need to Know About Water Safety 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