What volume of sterile, bacteriostatic water should be used to reconstitute a 50mg vial of GHK Cu (Glycyl Histidyl Lysine Copper) peptide for cosmetic or dermatological use? BAC Water Sunday How Much Bacteriostatic Water to Add to Peptides? Prime Peptides 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 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 10ml Bacteriostatic Mixing Water