Bacteriostatic water, also known as Bac water.

This preparation of sterile water and 0.9% benzyl alcohol (BnOH) allows repeated withdrawals to be made from a single 20mL vial. The WHO recommends that once the vial of bacteriostatic water is open the preservatives will prolong its life for up to 28 days and after this period of time the vial should be discarded.

Note: Always speak to your doctor before using Bacteriostatic Water or any injectable products on adults and small children. Do NOT use in newborns and not to be used for inhalation.