Bacteriostatic Water

Q: What is the difference between bacteriostatic water and sterile water?

Sterile water contains no preservative and must be used immediately after opening. Bacteriostatic water contains 0.9% benzyl alcohol which inhibits bacterial growth, allowing multi-use.

Q: Can all peptides be reconstituted in bacteriostatic water?

Most research peptides are compatible with bacteriostatic water. Some peptides (e.g., those with specific solubility requirements) may need dilute acetic acid or another solvent — always follow the research protocol.

Bacteriostatic Water (BW)

Research Use Only · Not for Human Consumption

Bacteriostatic water (BW) is sterile water for injection that contains 0.9% benzyl alcohol as a preservative. The benzyl alcohol inhibits bacterial growth, allowing the vial to be used multiple times without contamination. It is the standard diluent for reconstituting lyophilized research peptides because it maintains sterility over multiple draw events and is compatible with most peptide structures.

Key Facts

Benzyl alcohol content: 0.9%
Function: Maintains sterility after multiple uses
Alternative: Sterile water (single-use)
Storage: Room temperature, protected from light

Research Applications

Reconstituting lyophilized research peptides
Multi-use vial solvent in research settings
Maintaining sample sterility in research protocols

Frequently Asked Questions

What is the difference between bacteriostatic water and sterile water?

Can all peptides be reconstituted in bacteriostatic water?

Stock Bacteriostatic Water on Your Research Compound Store

PeptiCommerce provides turn-key access to COA-documented research compounds. Your branded WooCommerce store with P2P and crypto payment support, ready in under 72 hours.

Get Started →

Key Facts

Research Applications

Frequently Asked Questions

Related Terms

Get the Research Peptide Business Playbook