How much BAC water should you use? It depends There is no one size fits all answer. Different vials may need different amounts of BAC water depending on how strong you want the final mix 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 Buy Bacteriostatic Water for Research Licensed Peptides Bacteriostatic Water Peptide Supplies Regen Peptides UK BAC WATER 10ML OLYMPEX SOLUTIONS