Not all reconstitution waters are the same Different waters can impact stability, preservation, storage, and overall peptide integrity. That's why understanding the differences between BAC water, saline, sterile water, and AA DID YOU KNOW? Bacteriostatic Water contains 0.9% benzyl alcohol, which prevents bacteria from growing after the vial is opened. This makes it safe to use for up to 28 days once punctured Bac Water Made for Peptides Bac Water Catalog Sterile Water vs Normal Saline for Wound Care: Which is Better? Bacteriostatic Water (BAC Water) 10ml Sterile Diluent for Injections Purepeptix Bacteriostatic Water 30mL 0.9% Benzyl Alcohol : Amazon.com.au: Pet Supplies