Bacteriostatic Water 10ml

Bacteriostatic Water 10ml Australia and New Zealand: a sterile solvent for peptide reconstitution

Bacteriostatic water, or bac water, is the sterile solvent researchers use to turn freeze-dried peptides back into a liquid for study. AusBioLabs supplies it in Australia and New Zealand as a sealed 10ml vial in our Peptide Research Essentials range, for in-vitro (test-tube) laboratory research only. It is not a medicine or for human or animal use.

Bacteriostatic water at a glance

• What it is: a sterile solvent and peptide diluent (a liquid that dissolves a dry compound), preserved with benzyl alcohol so one vial can be used several times.
• Independently tested: checked by Janoshik, an independent lab, with heavy metals not detected and endotoxins under 1 EU per vial.
• Size and price: 10ml vial at $20, with volume savings on multiples (also a smaller 3ml size).
• Shipping: same-day dispatch from Sydney before 12pm AEST, free express over $200.

What is bacteriostatic water?

Bacteriostatic water is sterile water with a small amount of benzyl alcohol added as a preservative (a substance that stops bacteria from growing). The word “bacteriostatic” means it holds bacteria back, so the benzyl alcohol slows bacterial growth inside the vial.

What is bacteriostatic water used for in the lab?

In research, bacteriostatic water is the standard research solvent used to reconstitute lyophilised peptides. “Lyophilised” means freeze-dried, and “reconstitute” means mixing that dry powder back into a liquid so it can be studied. The researcher adds the water, the powder dissolves, and a stable peptide solution is ready for the lab. One 10ml vial can prepare many samples, so bacteriostatic water for peptides features in almost every peptide research project, from recovery peptides such as BPC-157 to metabolic compounds such as MOTS-C, all as in-vitro laboratory work.

Bacteriostatic water vs sterile water

Bacteriostatic water and sterile water start out the same: both are purified, sterile water. The difference is the preservative. Plain sterile water has nothing added, so once opened it has no protection against bacteria and is meant to be used once. Bacteriostatic water has benzyl alcohol added, so it resists bacterial growth and can be used several times from the same vial, which makes it the more practical choice for lab work that returns to the same vial over time.

Bacteriostatic water vs acetic acid water: choosing a diluent

Not every research peptide dissolves well in bacteriostatic water; some are harder to dissolve and need a mildly acidic liquid. For those, laboratories reach for acetic acid water, which is water with a small amount of acetic acid (the acid found in vinegar). As a rule, bacteriostatic water is the general-purpose solvent for most peptides, and acetic acid water is the backup for the ones that will not dissolve cleanly. Keeping both on hand covers almost any reconstitution.

Research use only: the status of bacteriostatic water

AusBioLabs supplies bacteriostatic water strictly as a laboratory material. It is not a medicine, supplement, cosmetic or consumer product of any kind, and it is not approved for human or animal use. Nothing on this page is medical advice. It is sold only to qualified researchers who will handle it under proper laboratory conditions and within all applicable Australian and New Zealand laws.

Bacteriostatic water purity and third-party testing

Before a batch is listed, AusBioLabs has it tested by Janoshik, an independent third-party laboratory. The testing covers what matters in a solvent: heavy metals (arsenic, cadmium, lead and mercury) came back not detected, and endotoxins (contaminants left by bacteria) measured under 1 EU per vial. The benzyl alcohol content is checked too, so the preservative level is confirmed rather than assumed. Each batch’s Certificate of Analysis (CoA, the lab’s signed result) is published on our Lab Test page, so you can match the vial you receive to its own test data before you buy.

Buy bacteriostatic water in Australia and New Zealand

• Bacteriostatic water for sale in Australia: buy online from AusBioLabs, an Australian-owned supplier holding local stock, so there are no customs delays. This listing is the 10ml vial at $20 (volume savings on multiples); a smaller Bac Water 3ml is also available.
• Order bacteriostatic water online in Australia and New Zealand before 12pm AEST for same-day dispatch from Sydney by tracked Australia Post Express.
• Express shipping is free on orders over $200, and every order includes its batch Certificate of Analysis.

How to store and handle bacteriostatic water

• Store sealed vials in a cool, dry place below 25°C, away from direct light.
• Wipe the rubber stopper with an alcohol swab before each use.
• Thanks to the benzyl alcohol preservative, an opened vial can be used several times; many labs discard it about 28 days after first use.
• Discard the vial if the liquid ever looks cloudy or discoloured.

Bacteriostatic water technical specifications

Bacteriostatic water FAQs

What is bacteriostatic water?

Bacteriostatic water is sterile water with a small amount of benzyl alcohol added as a preservative. The preservative slows the growth of bacteria, which is why one vial can be opened and used several times. AusBioLabs supplies it as a 10ml vial for laboratory research.

What is bacteriostatic water used for in laboratory research?

It is used to reconstitute freeze-dried research peptides, which means it turns the dry powder back into a liquid for study. It is the standard solvent for this, and it is used only in the lab, never in people or animals.

What is the difference between bacteriostatic water and sterile water?

Both are sterile, purified water. The difference is that bacteriostatic water has benzyl alcohol added as a preservative, so it resists bacteria and can be used several times, while plain sterile water has no preservative and is meant to be used once after it is opened.

How long does bacteriostatic water last, and does it expire?

Sealed and stored correctly, it keeps until the date printed on the vial. Once it is opened, the preservative protects it for a limited time, and many labs stop using the vial about 28 days after opening it, or sooner if the liquid turns cloudy or changes colour.

Does bacteriostatic water need to be refrigerated?

A sealed vial does not need to be kept in the fridge. Storing it in a cool, dry place below 25°C and away from direct light is enough. Wipe the rubber stopper with alcohol before each use to keep it clean.

Where can I buy bacteriostatic water in Australia and New Zealand?

You can purchase bacteriostatic water online from AusBioLabs. We keep stock in Australia and ship across Australia and New Zealand, so there is no need to buy it locally or search “near me.”

Is bacteriostatic water approved for human or medical use?

No. It is supplied strictly for laboratory research. It is not a medicine and is not approved for use in people or animals.

Disclaimer: AusBioLabs supplies bacteriostatic water for in-vitro laboratory research only. It is not a medicine, supplement, or cosmetic, and it is not intended for human or animal use. By placing an order, you confirm that you are a qualified researcher and that you will handle and use the product in line with all applicable Australian and New Zealand laws.