HPLC Verified
Research Grade
COA Published
Bacteriostatic Water 30mL
Bacteriostatic Water 30mL — 0.9% benzyl alcohol. Required for reconstituting all lyophilized peptide vials. 30mL multi-use vial with 28-day sterility window.
Price
$12.99
200 in stock
HPLC verified · third-party tested · research use only
Specifications
Benzyl Alcohol Bacteriostasis — Multi-Use Sterility
Bacteriostatic water contains 0.9% benzyl alcohol — a preservative that inhibits bacterial growth by disrupting bacterial cell membranes and inhibiting cellular respiration. This bacteriostatic action (inhibiting growth without necessarily killing existing bacteria) extends the sterility window of reconstituted peptide solutions to approximately 28 days when stored at 2–8°C. This is the critical distinction from sterile water, which contains no preservative and should only be used for single-dose preparation — any remaining reconstituted solution must be discarded. The 30mL multi-use vial provides sufficient BAC water to reconstitute multiple peptide vials, accommodating the volume requirements of most research protocols.
28-Day Sterility Window
The 0.9% benzyl alcohol preservative inhibits bacterial growth, extending the reconstituted solution's sterility window to approximately 28 days at 2–8°C refrigeration. This multi-use property is the critical advantage over sterile water — it allows a single reconstituted vial to be used across multiple research administrations.
Essential for All Lyophilized Peptides
Every lyophilized (freeze-dried) peptide vial in the catalog requires reconstitution before use. Bacteriostatic water is the standard reconstitution medium. Sterile water is only appropriate for single-use reconstitution. Using sterile water for multi-use vials introduces contamination risk.
30mL Sufficient for Full Protocol
The 30mL vial provides sufficient volume to reconstitute multiple peptide vials across a full research protocol: a 10mg peptide vial requires 5mL (2mg/mL) or 3.3mL (3mg/mL). The 30mL BAC water vial supports 6–9 standard peptide reconstitutions.
Frequently Asked Questions
Why bacteriostatic water instead of sterile water?
Sterile water has no preservative — once a vial is punctured, bacterial contamination risk increases immediately. Sterile water should only be used for single-dose reconstitution. Bacteriostatic water's 0.9% benzyl alcohol inhibits bacterial growth, providing a 28-day multi-use window essential for protocols that dose from the same vial across weeks.
How much BAC water is needed per peptide vial?
Volume depends on desired concentration. Standard for most research peptides: 5mL per 10mg vial = 2mg/mL concentration; 5mL per 15mg vial = 3mg/mL; 10mL per 50mg vial = 5mg/mL. The 30mL vial provides 6 standard reconstitutions at 5mL each.
Can reconstituted peptides be frozen?
No — reconstituted peptides should never be frozen. Benzyl alcohol crystallises at freezing temperatures and can damage peptide structure. Reconstituted solutions should be stored at 2–8°C for up to 28 days. Unreconstituted lyophilized peptides can be stored at −20°C for 12–24 months.
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Bacteriostatic Water 30mL
$12.99