BAC-586
Bacteriostatic Water (BAC Water)
$6.50
Bacteriostatic water, commonly called BAC water, is an aqueous solution containing 0.9% benzyl alcohol as a preservative. Explore BAC water from PNW PEPTIDES for laboratory research, and review the vial volume, composition and supplier-specified storage information before selecting your research supplies.
Size
In stock · 3 mL / vial · ships in 1–2 business days
- Quantity
- 3 mL / vial
- Form
- Lyophilized powder
- Stock status
- In stock
Certificate of Analysis
Third-party HPLC and MS results for Confirm lot match against the available report. View COA
Storage information
Store lyophilized material at -20 °C, protected from light and moisture. Once reconstituted for laboratory work, keep at 2–8 °C and avoid repeated freeze-thaw cycles.
Shipping
Insulated packaging with tracked domestic and international delivery. Import eligibility is the purchaser's responsibility.
Research Use Only
Not approved for human consumption, veterinary use, or the diagnosis, treatment, cure, or prevention of any disease. Not a drug, supplement, food, or cosmetic.
Product description
Bacteriostatic Water (BAC Water), 3mL per vial, used as a diluent for reconstituting lyophilized (freeze-dried) research peptides in laboratory settings. Bacteriostatic water is sterile water for injection that contains a small concentration of benzyl alcohol (typically around 0.9%), which acts as a preservative to inhibit bacterial growth, allowing a single vial to be used across multiple reconstitution events within a laboratory setting rather than requiring single-use sterile water.
This makes bacteriostatic water a common choice among researchers reconstituting lyophilized peptides for laboratory applications, since the preservative content extends the practical usability window of an opened vial when stored properly under refrigeration.
When reconstituting a lyophilized peptide, the diluent should be added slowly down the interior wall of the vial rather than directly onto the powder, to minimize agitation and support consistent dissolution. See our Reconstitution Guide for detailed step-by-step instructions on proper reconstitution technique, storage recommendations, and handling best practices for use with our peptide product line.
This product is supplied strictly for laboratory research use only (RUO). It is not a drug, dietary supplement, or cosmetic, and is not intended for human or animal consumption, diagnosis, treatment, cure, or prevention of any disease. Purchasers must be qualified researchers, laboratories, or institutions acquiring this product for legitimate scientific research purposes only, in accordance with our Terms of Service and RUO Disclaimer.
Product Specifications
| Product Name | Bacteriostatic Water for Injection, USP |
| Ingredients | Sterile Water, 0.9% Benzyl Alcohol (preservative) |
| Volume Options | 30ml Multi-Dose Vial |
| pH Level | 5.7 (4.5 to 7.0) |
| Primary Use | Diluting or dissolving lyophilized research powders |
| Storage | Store at 20°C to 25°C (68°F to 77°F). Do not freeze. Discard 28 days after first use. |
Frequently Asked Questions
What is bacteriostatic water used for in peptide research?
Bacteriostatic water (BAC water) is used to dilute or dissolve lyophilized research peptides. The addition of 0.9% benzyl alcohol acts as a preservative, inhibiting bacterial growth and allowing researchers to safely draw multiple doses from a single vial over a 28-day period.
How much BAC water should I add to a peptide vial?
The required volume depends on your desired concentration. Common reconstitution protocols use 1ml, 2ml, or 3ml of BAC water per vial. For example, adding 2ml of BAC water to a 5mg vial yields a concentration of 2.5mg per 1ml.
Is BAC water different from plain sterile water?
Yes. Bacteriostatic water contains a benzyl alcohol preservative, allowing the vial to be used multiple times over 28 days. Plain sterile water for injection does not contain a preservative and must be discarded immediately after a single use to prevent contamination.
Bac water reference information
Vial and presentation
Each Bac water vial is supplied as lyophilized powder at 3mL / vial. Vials are inspected before release and shipped in insulated packaging.
Purity and testing
Published results apply to the documented sample. No Certificate of Analysis is published here for this product.
Storage
Store lyophilized material at -20 °C, protected from light and moisture. Once reconstituted for laboratory work, keep at 2–8 °C and avoid repeated freeze-thaw cycles.
Reconstitution
Reconstitution for laboratory work is performed with bacteriostatic water or another suitable diluent, added slowly against the vial wall and swirled rather than shaken. Record the volume used so concentrations remain traceable. Supplied for research use only; not for human or veterinary use.
Other reference materials
