Understand the source comparison
Comparison Table: BAC Water vs. Sterile Water vs. Saline vs. WFI
Preservative Yes — 0.9% benzyl alcohol None None (standard) Multi-use vial compatible Yes No — single use only No (standard single-use) Typical pH 4.5–7.0 5.0–7.0 Osmolarity Near-isotonic Hypotonic Isotonic (~308 mOsm/kg) Near-zero solute Primary use case Pept
No winner is assigned.
This page preserves a source comparison for education. It does not add a rating, recommendation or clinical judgment.
- Preservative
- Yes — 0.9% benzyl alcohol
- None
- None (standard)
- Multi-use vial compatible
- Yes
- No — single use only
- No (standard single-use)
- Typical pH
- 4.5–7.0
- 5.0–7.0
- Osmolarity
- Near-isotonic
- Hypotonic
- Isotonic (~308 mOsm/kg)
- Near-zero solute
- Primary use case
- Peptide reconstitution (multi-draw)
- Single-use reconstitution
- Cell culture, IV formulations
- High-purity single-use
- Bacteriostatic activity
- Yes — inhibits broad-spectrum bacteria
- Endotoxin control
- Research-grade varies; pharmaceutical grade LAL-tested
- LAL-tested (pharma grade)
- Stringent USP/EP limits
- Suitable for peptide storage up to 28 days
- Not recommended
- Compound-dependent