bacteriostatic water (Bacteriostatic Water) is sterile water containing 0.9% benzyl alcohol as a preservative, used as a diluent for reconstitution of powders for research purposes. Intended for laboratory research only (Research Use Only).
What is bacteriostatic water?
Bacteriostatic water (also called "bacteriostatic water") is not a peptide and is not an active substance on its own. The preservative — benzyl alcohol — is meant to inhibit bacterial growth after the vial is opened, allowing the same vial to be used for multiple draws over time, per the manufacturer's instructions. It's important not to confuse it with regular sterile water (without preservative), which is intended for single use only.
Bacteriostatic water vs. sterile water
The main difference is the preservative: regular sterile water does not contain benzyl alcohol and is therefore suitable for a single draw, while bacteriostatic water allows repeated use from the same vial within the accepted time frame. Both options require working under sterile conditions.
Using bacteriostatic water to reconstitute powder
Bacteriostatic water is the most common diluent for reconstituting freeze-dried powders for research purposes. The amount of water added determines the final concentration per milliliter — for precise calculation you can use thethe reconstitution calculator. It's common to draw with a graduated insulin syringe and mark the calculated concentration.
Proper storage
Store in a cool place protected from light. After opening, it is recommended to keep refrigerated, use within the accepted research time frame, and clean the stopper before each draw.
Frequently asked questions — Bacteriostatic water
What is bacteriostatic water used for?
As a diluent for reconstitution of freeze-dried peptide powders and research molecules, for laboratory use only.
What is the difference between bacteriostatic water and sterile water?
Bacteriostatic water contains benzyl alcohol (a preservative) and allows repeated use; sterile water contains no preservative and is intended for single use.
How long can the vial be used after opening?
According to the manufacturer's instructions and storage conditions; the preservative inhibits bacteria but does not replace sterile technique.
Is the product intended for human use?
No. Intended for laboratory research use only (Research Use Only); purchase is for ages 18 and up.
To complete the protocol, seeResearch peptides catalog andreconstitution calculator.
Disclaimer: this product is intended for laboratory research use only. Purchase permitted from age 18 and over.
