What it is
Bacteriostatic water is sterile water with one small addition: benzyl alcohol.
That addition keeps microbes dormant, so the same vial can be opened more than once.
Research Use Only (RUO):Research classification with product and batch documentation where available.
Lab essentials
Bacteriostatic Water with benzyl alcohol 0,9%
Strength: 10 ml
Bacteriostatic Water with benzyl alcohol 0,9% is a research-use catalogue item organized around product identity, SKU traceability and available documentation.
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Batch documentationShips from Greece
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This product is intended exclusively for laboratory research use. It is not intended for human consumption, diagnosis, treatment, or prevention of disease.
Product information
FormLaboratory consumable
Strength10 ml
SKUAV-BACW-10ML
Stock statusIn stock
COA / BatchSee the documentation state below
StorageRoom temperature.
Packaging / shippingProtective professional shipping packaging with clear labelling.
Documentation on request
There is no published document for this specific SKU variant at the moment.
Contact us about documentationResearch overview
Documentation & COA
Batch documentation and COA, where available, are linked to the specific product batch and SKU.
This product is intended exclusively for laboratory research use. It is not intended for human consumption, diagnosis, treatment, or prevention of disease.
Product profile
0.9%
benzyl alcohol as preservative
10 ml
vial volume
Multiple
withdrawals from one vial
~28 days
typical window after first entry
Research context
When you choose it
It is the most common reconstitution solvent for most lyophilised peptides in the laboratory.
Its advantage is reuse: when a vial is meant to be drawn from several times over time, the bacteriostatic element limits contamination.
When not
It does not suit every molecule. Some 'difficult' peptides dissolve better in a mildly acidic solvent.
Benzyl alcohol is a substance with known limitations; that is why the choice of solvent is always made for the specific molecule and purpose.
Laboratory use
Used to reconstitute lyophilized peptides prior to laboratory use, and for dilutions where a preserved diluent is required so that multiple withdrawals from the same vial are possible.
Research Use Only. Laboratory consumable. Not intended for human or veterinary use, nor for injection into humans or animals. This is not a medicinal product.
Structural data
- Composition
- Water for injection with 0.9% benzyl alcohol
- Role of benzyl alcohol
- Bacteriostatic — inhibits microbial growth, does not kill microbes
- Volume
- 10 ml
- Use
- Reconstitution of lyophilized peptides
- Repeat entry
- Yes — the preservative permits multiple withdrawals
Comparison
Feature comparison
| Feature | Bacteriostatic water | Sterile water | 0.6% acetic acid |
|---|---|---|---|
| Contains preservative | Yes, 0.9% benzyl alcohol | No | No |
| Multiple withdrawals | Yes | No — single use | No — single use |
| Typical use | Most lyophilized peptides | When the preservative must be avoided | Peptides that will not dissolve at neutral pH |
| pH | Neutral | Neutral | Acidic |
| After opening | Refrigerate, typically up to ~28 days | Use immediately | Use immediately |
Storage & handling
- Store at room temperature before opening, away from direct light.
- After first entry, refrigerate and use typically within about 28 days.
- Clean the stopper before each entry.
- Use a fresh needle and syringe for every withdrawal.
- Discard if the liquid becomes cloudy, changes colour, or shows particles.
- Do not freeze.
Documentation
- Batch details and expiry date on the packaging.
- Declaration of laboratory-use-only status.
- Documentation available on request for the specific batch.
Product information
Frequently asked questions
What exactly does benzyl alcohol do?
It inhibits microorganisms from multiplying. It does not eliminate them — hence bacteriostatic rather than bactericidal. This is what permits multiple withdrawals from one vial.
How does it differ from sterile water?
Sterile water contains no preservative and is intended for single use. Bacteriostatic water permits repeated entry into the vial.
When is acetic acid used instead?
When a peptide does not dissolve adequately at neutral pH. Some peptides require an acidic environment to go into solution.
How long does it last after opening?
Typically about 28 days refrigerated. The exact period is stated on the batch packaging.
Can it be frozen?
No. Freezing is not recommended for this consumable.
How much do I need per peptide vial?
That depends on the laboratory protocol and the concentration required. We do not provide volume guidance; the calculation is made by the researcher.
Is it the same as pharmacy water for injection?
Not necessarily. This product is supplied as a laboratory consumable and is not intended for human or veterinary use.
What if the liquid turns cloudy?
Discard it. Cloudiness, colour change, or visible particles mean it must not be used.