Bacteriostatic water is sterile water carrying 0.9% benzyl alcohol, the workhorse solvent behind most freeze-dried peptide research. The preservative stops bacteria multiplying without being cytotoxic at the volumes involved, which is what gives a punctured vial its roughly 28-day sterility window.
- Sterile water with 0.9% benzyl alcohol preservative, the standard solvent used with most freeze-dried peptides.DailyMed
- At 0.9%, benzyl alcohol is bacteriostatic, meaning it prevents bacterial multiplication, without being cytotoxic at the volumes used.DailyMed
- The roughly 28-day window after first puncture is a contamination limit, not a potency one.peptidedosages
- The preservative guards against bacterial growth and does nothing for a peptide's own shelf life, which is compound-specific.peptidedosages
- Supplied premixed in 10 mL and 30 mL vials: clear, colourless, no preservative odour, no particulates.DailyMed