≥99% HPLCMixing Water (10ml)
Sterile water carrying a benzyl alcohol preservative, used as a diluent for reconstitution and short-term stability studies.
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Sold for research purposes only. For in-vitro laboratory research. Not a medicine and not for human or animal consumption. Supplied to qualified individuals aged 18 and over; you confirm this at checkout.
Research overview
Mixing Water (10ml) is sterile water containing 0.9% benzyl alcohol as a preservative, also listed as Sterile Water with Benzyl Alcohol. It is a laboratory diluent used for reconstitution and short-term stability studies. Supplied as a 10ml solution for in-vitro laboratory use only. It is a laboratory reagent and not a research peptide.
Bacteriostatic means that the preservative inhibits bacterial growth without necessarily killing the organisms. Benzyl alcohol at 0.9% is a widely used preservative of this kind, and it is water-soluble and compatible with many lyophilised peptides. Its presence makes this water suited to vials that are opened more than once in the laboratory, where microbial contamination between uses is a concern.
Typical uses are reconstituting lyophilised standards that will be sampled repeatedly, preparing working stocks for short-term stability studies, and checking how a preservative affects a peptide's behaviour. Benzyl alcohol can be cytotoxic to cells and can interfere with some assays, so preservative-free water is usually used for cell-based work. It is supplied as a 10ml sterile solution.
Research areas
- Reconstitution of repeatedly sampled standards
- Short-term stability studies with a preservative
- Microbial growth control in laboratory stocks
- Preservative compatibility testing
- Comparison with preservative-free diluents
Specifications
- CAS number
- 7732-18-5 / 100-51-6
- Molecular formula
- H2O + C7H8O
- Molecular weight
- 18.02 g/mol (water)
- Form
- solution (sterile water with 0.9% benzyl alcohol)
- Purity
- ≥99% (HPLC)
- Also known as
- Sterile Water with Benzyl Alcohol
- Supplied as
- 10ml per vial, solution (sterile water with 0.9% benzyl alcohol)
Storage and handling
Laboratory role: a preserved diluent for reconstituting lyophilised materials that will be sampled more than once. Store unopened vials at room temperature, away from light and heat, and record the date on which a vial is first opened.
Certificates of analysis
Each lot of Mixing Water (10ml) is released with a certificate recording identity and purity. Enter the lot number printed on your vial on the lab testing page to view it.
Questions
What is in bacteriostatic water?
It is sterile water with 0.9% benzyl alcohol as a preservative. The benzyl alcohol limits bacterial growth in a container that is opened more than once.
When should preservative-free water be used instead?
Choose preservative-free sterile water for cell-based assays and any work where benzyl alcohol could interfere or be cytotoxic. Bacteriostatic water suits stocks that are sampled repeatedly in cell-free work.
Is bacteriostatic water a medicine?
No. It is a laboratory diluent supplied strictly for in-vitro laboratory use. It is not a medicine, food or supplement, and it is not for human or animal use. Buyers must be aged 18 or over.

