Bacteriostatic water

Bacteriostatic water is sterile water containing a small amount of benzyl alcohol, used in laboratory and research settings to dilute or dissolve compounds for experimental use. It is designed to inhibit bacterial growth within the container, allowing multi‑use access under controlled conditions.

In research environments, studies have observed that the benzyl alcohol component provides a mild antimicrobial effect, helping maintain sterility during repeated withdrawals. Experimental work also notes that it behaves as an inert solvent for peptides and other substances when used according to laboratory protocols.