Format: 30 mL sterile solution · Composition: sterile water + 0.9% benzyl alcohol · Type: reconstitution diluent
Bacteriostatic water is not a peptide or an active compound. It is sterile water with a small amount of benzyl alcohol added, which lets it be used and re-entered multiple times without bacteria growing in it. In a research setting it is the standard diluent for dissolving lyophilized (freeze-dried) materials. This is a 30 mL vial with a resealable stopper.
Composition & Identity
Bacteriostatic water is a sterile aqueous solution containing 0.9% benzyl alcohol as a bacteriostatic preservative. The benzyl alcohol is what allows repeated withdrawals from the same vial while keeping the water sterile. It is a clear, colorless solution and contains no peptide, protein, or active pharmaceutical ingredient.
Intended Research Use
Bacteriostatic water is used to reconstitute lyophilized research materials into solution.
- Reconstitution diluent. It dissolves freeze-dried powders for research handling.
- Multi-use vial. The benzyl-alcohol preservative supports repeated entries without contamination.
- General laboratory solvent. It serves as a sterile water source for compatible research preparations.
It is a laboratory consumable, not a research subject in itself.
Specifications
| Attribute |
Value |
| Product type |
Sterile diluent (not a peptide) |
| Composition |
Sterile water + 0.9% benzyl alcohol |
| Volume |
30 mL |
| Appearance |
Clear, colorless solution |
| Container |
Vial with resealable stopper |
| Storage |
Controlled room temperature, 20-25°C (68-77°F) |
| Classification |
Research use only |
Storage & Handling
Store at controlled room temperature, 20-25°C (68-77°F). Bacteriostatic water does not need refrigeration or freezing. Keep the vial sealed between uses, wipe the stopper before each entry, and inspect the solution for clarity before use. Discard if it becomes cloudy or discolored.
Quality Assurance
Bacteriostatic water is prepared and tested to standards appropriate for a sterile diluent, which means sterility and preservative content rather than peptide assays. Peptide-specific tests such as HPLC purity, mass-spec identity, and amino-acid analysis do not apply to water and are not used here. Relevant quality checks cover sterility, benzyl-alcohol content, and clarity.
Frequently Asked Questions
What is bacteriostatic water?
It is sterile water containing 0.9% benzyl alcohol, a preservative that lets the vial be re-entered multiple times without bacterial growth. It is used as a reconstitution diluent in research and is supplied for research use only.
Is bacteriostatic water a peptide?
No. It contains no peptide or active ingredient. It is simply preserved sterile water used to dissolve lyophilized materials.
What is the benzyl alcohol for?
Benzyl alcohol is a bacteriostatic preservative. It keeps the water sterile through repeated withdrawals, which is what makes the vial “multi-use.”
How is bacteriostatic water stored?
At controlled room temperature, 20-25°C. Unlike lyophilized peptides, it should not be frozen or refrigerated.
Why doesn’t this product have HPLC purity or a peptide COA?
Because it is water, not a peptide. Peptide assays like HPLC purity and amino-acid analysis do not apply; the relevant quality checks are sterility, preservative content, and clarity.
How is bacteriostatic water used in research?
It is used to reconstitute freeze-dried research materials into solution, serving as a sterile, multi-use diluent.
How long can the vial be used after opening?
The benzyl-alcohol preservative supports repeated entries; follow standard laboratory practice and discard if the solution becomes cloudy or discolored.
Is bacteriostatic water FDA approved?
The material sold here is a research-use-only laboratory diluent, not for human or veterinary use.
