Understand the source comparison
Bac Water vs Sodium Chloride Peptides: Practical Comparison
Antimicrobial Preservation Contains 0.9% benzyl alcohol. Inhibits bacterial growth across repeated vial access No preservative. Sterility maintained only until first needle puncture Bacteriostatic water essential for multi-dose protocols exceeding 72 hours Pos
No winner is assigned.
This page preserves a source comparison for education. It does not add a rating, recommendation or clinical judgment.
- Antimicrobial Preservation
- Contains 0.9% benzyl alcohol. Inhibits bacterial growth across repeated vial access
- No preservative. Sterility maintained only until first needle puncture
- Bacteriostatic water essential for multi-dose protocols exceeding 72 hours
- Post-Reconstitution Shelf Life
- 28 days refrigerated (2–8°C) with maintained potency
- 24–72 hours before microbial contamination risk escalates
- Saline appropriate only for single-use or same-day protocols
- Peptide Compatibility
- Compatible with most research peptides except benzyl alcohol-sensitive compounds
- Universal compatibility. No peptide shows saline intolerance
- Check supplier guidelines. Some peptides explicitly require saline
- Cost per mL
- $0.15–$0.30 per mL (bulk pricing)
- $0.08–$0.15 per mL (bulk pricing)
- Cost difference negligible compared to wasted peptide from premature degradation
- Regulatory Classification
- USP-grade sterile water with antimicrobial preservative
- USP-grade isotonic saline solution
- Both meet sterility standards. Difference is post-opening preservation