Can bacteriostatic water be stored at room temperature for reuse another day? 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 Nucleon Nutrition BAC WATER 10 ml Bacteriostatic Water for Peptides Nucleon Nutrition Peptides Shop 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