Understand the source comparison
Bac Water vs. Sterile Water Comparison
Preservative 0.9% benzyl alcohol None Reconstituted peptide shelf life 21-30 days (refrigerated) 24-48 hours (refrigerated) Multi-dose use Yes (up to 28 days) No (single withdrawal only) Bacterial inhibition Yes No Cost per vial $3-8 (30 mL) $1-3 (10 mL) Water
No winner is assigned.
This page preserves a source comparison for education. It does not add a rating, recommendation or clinical judgment.
- Preservative
- 0.9% benzyl alcohol
- None
- Reconstituted peptide shelf life
- 21-30 days (refrigerated)
- 24-48 hours (refrigerated)
- Multi-dose use
- Yes (up to 28 days)
- No (single withdrawal only)
- Bacterial inhibition
- Yes
- No
- Cost per vial
- $3-8 (30 mL)
- $1-3 (10 mL)
- Water shelf life after opening
- 28 days
- Use immediately
- Best for
- Standard peptide reconstitution
- Single-dose lab protocols
- A $5 vial of bacteriostatic water protects a $50-200 peptide vial for an entire month. Using sterile water to save a few dollars risks wasting the peptide itself.