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), Bacteriostatic Water for Injection with Preservative by Hospira Pfizer BAC Bacteriostatic Water 10ml Polygon Peptides How to Reconstitute Peptides Using BAC Water 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