Bacteriostatic Water – 30ML

Bacteriostatic Water 30mL is a larger-volume vial of sterile water containing 0.9% benzyl alcohol as a bacteriostatic preservative. Like the standard 10mL vial, it is used as a diluent for reconstituting lyophilized peptides and research compounds. The 30mL format is designed for researchers working with multiple peptide vials or larger reconstitution volumes, providing greater convenience and value. The benzyl alcohol preservative inhibits bacterial growth, allowing repeated use over 28 days from first puncture. This product is manufactured under USP standards for sterility and purity. The larger volume reduces the need for multiple bacteriostatic water vials in research settings where several compounds are being prepared simultaneously. It maintains the same quality specifications as the 10mL format.

Benzyl Alcohol as Preservative

The USP monograph for Bacteriostatic Water for Injection specifies 0.9% benzyl alcohol as the standard preservative concentration. Benzyl alcohol disrupts bacterial cell membrane integrity, providing antimicrobial protection in multi-use vials [1].

Peptide Reconstitution Technique

When reconstituting lyophilized peptides, direct the bacteriostatic water slowly along the inner vial wall. Allow the lyophilized cake to dissolve gradually with gentle swirling. Avoid vigorous shaking, which can cause foaming and peptide degradation [2].

Multi-Dose Vial Guidelines

The CDC guidelines for multi-dose vial use recommend dating the vial upon first puncture and discarding after 28 days regardless of remaining volume. Proper aseptic technique during each withdrawal is essential to maintain sterility [3].