Buy Bacteriostatic Water (BAC Water) 3ml UK Fast Dispatch Should BAC water be refrigerated or stored at room temperature? Body Pharm Tirzepatide 30 Pen Beskinny Reconstitution = mixing your peptide powder with bacteriostatic water, Best practice:, Room temp bac water, Inject slowly along vial wall, Avoid foam bubbles, Gently swirl (never shake), 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