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Lab SuppliesBAC Water
Sterile bacteriostatic water (0.9% benzyl alcohol) for reconstitution of lyophilised research peptides.
Research catalogueLaboratory-use positioning
Batch documentationBatch certificate supplied with order
Order trackingFrom payment to dispatch
Product information
CompoundBAC Water
Presentation3ml vial
CategoryLab Supplies
AvailabilityIn stock
Batch COACertificate supplied with order
€4.90
For research use only. Not for human consumption, diagnostic, therapeutic or veterinary use.
Overview
Bacteriostatic Water for Injection (BWFI) is sterile water containing 0.9% benzyl alcohol as a bacteriostatic preservative. It is the standard reconstitution vehicle for lyophilised (freeze-dried) peptides in research settings. The benzyl alcohol inhibits microbial growth, allowing multi-use of a single vial over a limited period (typically up to 28 days when stored correctly). Unlike sterile water for injection (SWFI), which must be used immediately and discarded, bacteriostatic water supports the multi-dose reconstitution protocols common in laboratory peptide research.
Mechanism of Action
Benzyl alcohol at 0.9% concentration inhibits bacterial proliferation by disrupting cell membrane integrity and interfering with microbial energy metabolism. This concentration is sufficient to prevent growth of most common laboratory contaminants while remaining compatible with peptide stability. The water component serves as the solvent for reconstituting lyophilised peptides, restoring their three-dimensional structure and biological activity. Proper reconstitution technique — slow addition along the vial wall with gentle swirling — preserves peptide integrity by minimising shear stress and foaming.
Research Applications
- Reconstitution of lyophilised peptide preparations
- Multi-dose research protocols requiring preserved diluent
- Peptide stability and solubility studies
- Standard laboratory supply for peptide research workflows
FREE TOOL
Reconstitution calculator
Enter your reconstitution to get the draw volume for BAC Water.
Concentration2.50 mg/ml
Draw volume0.100 ml
On the syringe10.0 units
Doses per vial20
10units
Pull the plunger to 10.0 units on a 1 ml U‑100 syringe0.100 ml · 2.50 mg/ml · 20 doses per vial
Concentration = peptide mass ÷ water volume. Unit readings assume U-100 insulin syringes, graduated 100 units per millilitre. For laboratory calculation only — not dosing guidance.