How to Store Bacteriostatic (BAC) Water Temperatures, Do's & Don'ts, vialcase.com Reconstituting a peptide the right way = better stability, better results, and safer handling. Here are the non negotiables I teach every client before they start: Clean setup first: wash hands + How to Store BAC Water After Opening 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 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 Pfizer Hospira Bacteriostatic Water 30 mL Peptide Test