How to Store BAC Water After Opening CANLABS: Does BAC Water Expire? Have had for a year in fridge. : r Peptides Do hot water bottles expire? [2 min read] The Hot Water Bottle Company The expiration date on a water bottle primarily refers to the plastic bottle itself, not the water inside 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