Bacteriostatic Water
Research Use Only | Not for Human Consumption
Sterile, multi-use bacteriostatic water used as a diluent for reconstituting peptides and other research compounds.
Chemistry
| CAS# | Formula | Molar Mass |
|---|---|---|
| CAS Number: 7732-18-5 | Molecular Formula: H2O | Molar Mass: 18.015 g/mol |
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Sterile water with 0.9% benzyl alcohol
USP grade with 0.9% benzyl alcohol preservative. For research use only; not for human consumption.
What is Bacteriostatic Water?
Bacteriostatic water is sterile water containing 0.9% benzyl alcohol as a preservative, which inhibits bacterial growth. The benzyl alcohol allows for multiple withdrawals from the same vial while maintaining sterility, making it the standard diluent for reconstituting lyophilized research peptides.
It is supplied USP grade, sterile filtered, at pH 5.0–7.0, in a multi-dose glass vial with a rubber stopper and flip-off cap. Unopened shelf life is approximately 2 years from the manufacture date; store at room temperature (15–25 °C), away from direct sunlight, and do not freeze.
After first puncture, refrigeration (2–8 °C) is recommended and the vial should be used within 28 days, always using sterile technique when withdrawing. Discard if the solution becomes cloudy or discolored. This product is intended for laboratory research purposes only.
How should Bacteriostatic Water be stored?
Bacteriostatic Water is supplied as a sterile liquid solution in a multi-dose vial.
Store refrigerated (2–8 °C), away from direct light, and do not freeze. Draw with sterile technique.
Discard if the solution becomes cloudy, discolored, or shows visible particulates.
Certificate of Analysis
All Bacteriostatic Water batches are independently tested by a third-party laboratory for identity by mass spectrometry and for microbial contamination by PCR.
Product
Bacteriostatic Water (BAC) — 10ml
Lot Number
BW2689
Appearance
Clear Liquid
pH
5.6
Microbial Analysis (PCR)
No Detectable Microbial DNA
Test Method
LC-MS identity / PCR microbial
Report Date
08/04/2026
COA Number
2607301332
Laboratory
Freedom Diagnostics
No Certificate of Analysis is available for the selected size yet. Contact support for batch-specific documentation.
COA documents are updated with each new batch. Contact support for batch-specific documentation.
