Bacteriostatic Water

Bacteriostatic Water Australia – 3ml, 10ml & 20ml

Bacteriostatic water (often called "Bac water") is sterile water containing 0.9% benzyl alcohol, which inhibits bacterial growth in the vial. This makes it suited to multi-dose use in laboratory settings, such as reconstituting lyophilized (freeze-dried) powders for research.

Product details

• Composition: Sterile water with 0.9% benzyl alcohol as a bacteriostatic preservative
• Sizes available: 3ml, 10ml, 20ml
• Format: Multi-dose sealed vial with rubber stopper
• Storage: Store at room temperature, away from direct light. [Confirm with your supplier]
• Once opened: Multi-dose vials are generally discarded within 28 days of first puncture, or sooner if cloudy or contaminated. [Confirm with your supplier]

Which size should I choose?

• 3ml: Single projects or small-batch reconstitution
• 10ml: Regular lab use across several vials
• 20ml: Higher-volume use and better value per ml

Frequently asked questions

What is the difference between bacteriostatic water and sterile water?
Sterile water has no preservative and is typically for single use. Bacteriostatic water contains benzyl alcohol, so the vial can be punctured multiple times.

Can I use bacteriostatic water with peptides?
It is widely used in laboratories to reconstitute lyophilized research peptides. See our research peptide range.

For laboratory research use only. Not for human or veterinary use.

Where can I buy bacteriostatic water in Australia?
You can order bacteriostatic water online from Aus Peptides in 3ml, 10ml and 20ml vials. Choose your size on this page, add it to your cart, and we dispatch from Sydney. [Add your delivery times and shipping details here.] Bacteriostatic water is supplied for laboratory research use only. You can add it to the same order as your research peptides.

How long does bac water last?
An unopened, sealed vial lasts until the expiry date printed on the label, stored at room temperature away from direct light. Once the stopper is punctured, multi-dose vials are generally discarded within 28 days, or sooner if the liquid looks cloudy, discoloured or contaminated. Write the date of first use on the vial so you can track it.

Does bac water need to be refrigerated?
No. Bacteriostatic water is stored at room temperature, typically between 20°C and 25°C, away from heat and sunlight, both before and after opening. Refrigeration is not required for the water itself. Reconstituted peptides are a separate matter and usually have their own storage requirements, so follow the instructions for the specific compound you are working with.