Bacteriostatic Water 3 mL is a sterile, non-pyrogenic aqueous solution containing 0.9% benzyl alcohol as a preservative. It is commonly used in laboratory settings for the dilution and reconstitution of lyophilised materials where sterility and repeat-use stability are required.

Area of Interest

Laboratory use of Bacteriostatic Water typically focuses on:

• Reconstitution Studies: Employed as a solvent for lyophilised peptides and reference materials under controlled aseptic technique.
• Formulation Research: Used in the preparation of aqueous solutions for method development and stability assessments.
• Preservative Mechanisms: Investigated for the inhibitory effect of 0.9% benzyl alcohol on microbial growth during multiple withdrawals.

These applications make Bacteriostatic Water a standard utility component across biochemical, analytical, and pharmaceutical research workflows.

Technical Information

• Chemical Name: Bacteriostatic Water (Water for Injection with Benzyl Alcohol)
• Composition: Sterile Water ~99.1%; Benzyl Alcohol 0.9% (v/v)
• Appearance: Clear, colourless solution
• Container Type: Type I borosilicate glass vial, aluminium crimp with flip-off cap
• Fill Volume: 10 mL
• Preservative: Benzyl Alcohol 0.9%
• pH Range: 4.5–7.0

Storage Guidelines

• Store at controlled room temperature (15–25 °C).
• Keep sealed when not in use; avoid freezing.
• Use aseptic technique for multiple withdrawals.

Solubility

Fully miscible with sterile water and common aqueous buffers used in laboratory preparation and reconstitution.

References

• United States Pharmacopeia (USP) <797> Pharmaceutical Compounding—Sterile Preparations.
• British Pharmacopoeia (latest edition): Monographs relating to Water for Injections and benzyl alcohol–preserved aqueous solutions.