In short: Bacteriostatic water is sterile water containing a small amount of preservative (commonly 0.9% benzyl alcohol) that inhibits bacterial growth. In peptide research it is the standard fluid for reconstituting lyophilised compounds because it tolerates multiple withdrawals from a single vial.

Why not plain sterile water?

Plain sterile water has no preservative, so a vial is intended for single use. The bacteriostatic preservative lets a research vial be accessed repeatedly over its working life without the same microbial-growth concern, which suits multi-step laboratory work.

How it is used in peptide research

Lyophilised peptides are reconstituted by slowly introducing bacteriostatic water down the side of the vial and allowing the powder to dissolve without vigorous agitation. MyoLabs stocks it in 3ml and 10ml presentations.

Frequently Asked Questions

What is bacteriostatic water made of?

Sterile water for injection with a bacteriostatic preservative, most commonly 0.9% benzyl alcohol, which inhibits bacterial growth.

Why is bacteriostatic water used for peptides?

Because peptide research often involves multiple withdrawals from one vial, the preservative helps limit microbial growth across repeated access.

Can I use tap or distilled water instead?

No. Research reconstitution uses pharmaceutical-grade bacteriostatic or sterile water; other water sources are not suitable.

Research Use Only. MyoLabs products are supplied strictly for laboratory and research use. They are not medicines and are not for human or animal consumption, diagnosis, treatment, or prevention of any condition. Always comply with the laws of your jurisdiction.