Bacteriostatic Water
$35.00
Bacteriostatic water (often called “bac water”) is a sterile, non-pyrogenic water solution that contains 0.9% benzyl alcohol as a preservative to help prevent bacterial growth. It is commonly used to dilute or reconstitute lyophilized (freeze-dried) compounds before injection. Because of the preservative, it can typically be used multiple times for up to about 28 days after first puncture when handled and stored properly, unlike plain sterile water which is single-use. It is widely used in laboratory and clinical environments where repeated, sterile reconstitution is required.
PRODUCT FAQ
What is bacteriostatic water used for in research settings?
It is commonly used to dilute or reconstitute lyophilized (freeze-dried) compounds so they can be measured and handled in liquid form for laboratory procedures.
What makes bacteriostatic water different from sterile water?
Bacteriostatic water contains 0.9% benzyl alcohol, which acts as a preservative to slow bacterial growth, allowing multi-dose use. Sterile water does not contain a preservative and is typically single-use only.
Why does bacteriostatic water allow multiple uses?
The added benzyl alcohol helps inhibit microbial growth after the vial has been punctured, which supports repeated withdrawals when proper sterile handling techniques are followed.
How long is bacteriostatic water typically used after opening?
In controlled environments, it is commonly used for up to about 28 days after the first puncture, provided it is stored correctly and handled using sterile technique.
What storage conditions are recommended for bacteriostatic water?
It is generally stored at controlled room temperature and kept sealed when not in use. Always avoid contamination by using clean tools and minimizing repeated exposure.



