How to Store Bacteriostatic (BAC) Water Temperatures, Do's & Don'ts, vialcase.com Bacteriostatic Water Pure Health Peptides BAC Water 30mL Bacteriostatic Research Solution Buy Bacteriostatic Water 10ml (99.9% Sterile) CellPeptides Should BAC water be refrigerated or stored at room temperature? 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.