BAC Water, 3mL

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

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.