What is Bacteriostatic Water?

Bacteriostatic Water is sterile water containing 0.9% benzyl alcohol as a bacteriostatic preservative. It is USP-grade and used for reconstituting lyophilized peptides in research settings.

What is the shelf life?

Unopened bacteriostatic water has a shelf life of approximately 2 years when stored at room temperature. Once opened, use within 28 days to maintain sterility.

When do I need BAC Water?

Bacteriostatic water is required to reconstitute any lyophilized (freeze-dried) peptide before use in research protocols. Most peptide products on our site require BAC water.

Yes, our Bacteriostatic Water meets USP standards for sterility, endotoxin levels, and benzyl alcohol concentration. Each lot is tested and documented.

Bacteriostatic Water (0.9% Benzyl Alcohol)

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Bacteriostatic Water (0.9% Benzyl Alcohol)

Name: Bacteriostatic Water (0.9% Benzyl Alcohol)
Brand: ANVIL PEPTIDES
SKU: bac-water
Availability: InStock
Rating: 4.9 (47 reviews)

USP Grade PuritySterile Solution

USP-grade reconstitution solvent — 0.9% benzyl alcohol preserved

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$9.99$14.99-33%

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For research use only. Not for human consumption.

Overview

Bacteriostatic Water for reconstitution is a sterile, non-pyrogenic preparation of water containing 0.9% benzyl alcohol as a bacteriostatic preservative. It is the standard solvent for reconstituting lyophilized peptide preparations in laboratory settings. The benzyl alcohol preservative inhibits microbial growth, allowing multi-use over a 28-day period when stored at 2–8°C after initial puncture. Essential for any peptide reconstitution protocol.

Specifications

Form	Sterile Solution
Purity	USP Grade
Storage	Room Temperature (2–25°C)

Frequently Asked Questions

Bacteriostatic Water is a sterile, non-pyrogenic preparation of water containing 0.9% benzyl alcohol as a bacteriostatic preservative. It is the standard solvent for reconstituting lyophilized peptide preparations in laboratory settings.

The benzyl alcohol preservative inhibits microbial growth, allowing multi-use over a 28-day period when stored at 2–8°C after initial puncture. After 28 days, a new vial should be used to maintain sterility standards.

BAC Water is required for reconstituting all lyophilized (freeze-dried) peptide powders. It is not needed for oral capsule products like MK-677 or for pre-mixed solutions.

Yes. Our Bacteriostatic Water meets USP (United States Pharmacopeia) standards for sterility, non-pyrogenicity, and benzyl alcohol concentration. Store at room temperature (2–25°C) prior to use.