Bacteriostatic Water 10mL
Sterile bacteriostatic water for research and laboratory applications. Contains 0.9% benzyl alcohol for improved stability after opening.
✔️ 10mL volume
✔️ Sterile filtered
✔️ 0.9% Benzyl Alcohol
✔️ Multi-use vial
✔️ Premium lab-grade packaging
✔️ Suitable for research applications
Application:
• Designed for laboratory and research use in combination with research compounds and peptide studies.
• ⚠️ For Research Use Only – Not For Human Use.
Bacteriostatic vs sterile water
About Bacteriostatic Water
What is bacteriostatic water?
Bacteriostatic water – often shortened to bac water – is sterile water with 0.9% benzyl alcohol added as a preservative. Benzyl alcohol inhibits the growth of bacteria that may enter the vial, so a multi-use vial can be punctured several times. In the lab, bacteriostatic water 0.9% benzyl alcohol is mainly used to reconstitute lyophilised research peptides and to dilute solutions.
When to choose bac water – and when not
The preservative is what makes bacteriostatic water practical: one vial can serve several withdrawals, for example when you reconstitute several research peptides or prepare a solution in steps. For applications in which benzyl alcohol is undesirable – because a compound or an assay is sensitive to it – sterile water without additives is the better choice. For that, see our Sterile Water 2mL – Box of 10 Ampoules.
Storage and use after opening
Store unopened vials at room temperature, protected from light. Write the date on the label at the first puncture: it is common practice to discard a vial 28 days after it was first punctured. Disinfect the rubber stopper before every withdrawal.
Want to buy bacteriostatic water? Our Bacteriostatic Water 10mL comes in a 10 mL multi-use vial and is intended for laboratory research use only – not for human or veterinary use.
Frequently asked questions
Bacteriostatic vs sterile water – what's the difference?
Bacteriostatic water contains 0.9% benzyl alcohol as a preservative, so a vial can be punctured repeatedly. Sterile water contains no preservative and is meant for single use: open, use and discard the rest.
How long can an opened vial be used?
The usual rule is to discard a vial 28 days after the first puncture. Note the date on the vial so you know when the period ends.
How do I store bacteriostatic water?
At room temperature and away from light, both before and after opening. After the first puncture, the 28-day rule applies.
Is this bacteriostatic water intended for human use?
No. It is a laboratory supply for reconstituting and diluting research compounds, for research use only – not for human or veterinary use.