Bacteriostatic Water for Peptide Reconstitution: What to Know

Research Use Only: This article is for laboratory and research audiences. It is not medical advice, and this product is for laboratory use only, not for human or veterinary use.

What is bacteriostatic water?

Bacteriostatic water is sterile water that contains a small amount of a preservative (commonly around 0.9% benzyl alcohol) which inhibits the growth of bacteria. In peptide research it is one of the most common solvents used to reconstitute lyophilised peptides, because the preservative allows a reconstituted solution to be used over a longer period than plain sterile water.

Why researchers use bacteriostatic water

Most lyophilised research peptides are supplied as a dry powder that must be dissolved before analysis. Bacteriostatic water is a convenient general-purpose solvent for this, although some peptides require plain water or a dilute acid instead, as noted on their documentation.

General laboratory points

• Extended use window: the preservative helps limit microbial growth in a reconstituted solution.
• Check the COA: always use the solvent recommended for the specific peptide.
• Storage: keep reconstituted solutions refrigerated and use within the indicated stability window.

Why the “research use only” label matters

This bacteriostatic water is supplied as a laboratory research reagent and is intended strictly for laboratory and scientific research, not for human or veterinary consumption.

Frequently asked questions

What is bacteriostatic water used for in peptide research?

It is used as a solvent to reconstitute lyophilised research peptides, with a preservative that extends the usable window of the solution.

Is this bacteriostatic water for human use?

No. It is a laboratory research reagent only and is not for human or veterinary use.

Key takeaways

Bacteriostatic water is a preservative-containing sterile water widely used as a solvent for reconstituting research peptides. It is a research reagent only. Review the Bacteriostatic Water research reagent.

Disclaimer: This article is for informational and educational purposes for a research audience. It is not medical advice. Products referenced are sold strictly for laboratory research and are not for human or veterinary use.