BAC Water 30ml Large Bottle 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 BACTERIOSTATIC WATERS LABSUPPLY AUSTRALIA Buy Bacteriostatic Water 10ml (99.9% Sterile) CellPeptides BAC Water Advanced Research Your eyes are your first line of defense. Good BAC Water: Crystal clear, odorless (faint alcohol scent), and painless. Bad BAC Water: Cloudy, particulate matter, strong chemical smell, or severe burning.