Description
Bacteriostatic Water represents a critical component in peptide research infrastructure. This carefully formulated solution combines ultra-pure water with benzyl alcohol to create an environment that inhibits bacterial growth while maintaining the integrity of dissolved compounds. The 0.9% benzyl alcohol concentration is precisely calibrated to provide antimicrobial protection without interfering with most research compounds. This balance makes bacteriostatic water the gold standard for reconstituting lyophilized peptides, ensuring both stability and sterility throughout the research process.
This product is strictly for research purposes only. Not approved for human or animal use.
Key Characteristics
COMPOSITION
Base: Sterile Water for Injection (USP)
Preservative: 0.9% Benzyl Alcohol
pH: 4.5-7.0
Osmolality: 0 mOsm/kg
PHYSICAL PROPERTIES
Appearance: Clear, colorless liquid
Sterility: 0.22μm filtered
Endotoxin: <0.25 EU/mL
Storage: Keep refrigerated 36‑46 °F (2‑8 °C)
How It Works
Bacteriostatic water functions through multiple protective mechanisms:
Antimicrobial Action
Benzyl Alcohol Mechanism
Disrupts bacterial cell membranes and denatures proteins
Static vs Cidal
Inhibits bacterial growth (bacteriostatic) rather than killing (bactericidal)
Broad Spectrum
Effective against most common laboratory contaminants
pH Stability
Maintains antimicrobial activity across pH range
Peptide Compatibility
Non-reactive
Does not interact with most peptide structures
Stability Enhancement
Helps maintain peptide integrity during storage
Multiple Withdrawals
Allows repeated access without contamination risk
Research Applications
Bacteriostatic water serves multiple critical functions in research:
Peptide ReconstitutionPrimary application in peptide research: Dissolves lyophilized peptides while maintaining structure Preserves biological activity of sensitive compounds Enables accurate dosing and dilution Compatible with most research peptides | Storage SolutionsExtended stability for research compounds: Allows storage of reconstituted peptides for weeks Prevents bacterial contamination during storage Maintains sterility through multiple uses Reduces waste from single-use preparations |
Laboratory StandardsMeeting research quality requirements: USP-grade water ensures consistency Low endotoxin levels for sensitive assays Validated sterility for reproducible results Documented quality control parameters | Best PracticesOptimal use in research settings: Use aseptic technique for all withdrawals Store reconstituted peptides as recommended Label vials with reconstitution date Discard if any cloudiness or particles appear |
Important Considerations
Key factors for optimal bacteriostatic water use:
Temperature Sensitivity
Store at recommended temperature to maintain sterility
Compatibility Check
Verify peptide compatibility with benzyl alcohol
Expiration Dating
Monitor expiration and discard when expired
Volume Considerations
Calculate appropriate reconstitution volumes
Proper use of bacteriostatic water is essential for maintaining research integrity and reproducibility.
IMPORTANT: This product is exclusively for laboratory research purposes and is not approved for human or veterinary use.
References
- United States Pharmacopeia. “Bacteriostatic Water for Injection.” USP Monographs.
- Meyer BK, et al. “Antimicrobial preservative use in parenteral products: Past and present.” J Pharm Sci. 2007.
- Nema S, et al. “Excipients and Their Role in Approved Injectable Products.” PDA J Pharm Sci Technol. 2011.
- FDA Guidance. “Container Closure Systems for Packaging Human Drugs and Biologics.” 1999.
Frequently Asked Questions :
What is bacteriostatic water used for?
Reconstituting lyophilized research peptides into solution; its benzyl alcohol preservative allows repeated withdrawals from one vial.
How much do I need to reconstitute a peptide?
Depends on the peptide’s mass and target concentration; each product page lists solubility info to calculate the ratio.
Is it the same as sterile water for injection?
No, sterile water for injection is single-use; bacteriostatic water’s preservative allows multiple uses.
How should it be stored after opening?
Refrigerate at 2–8°C, discard if cloudy or if particulates appear.
Where can I buy it?
Available in 3mg and 10mg vials, USP-grade, 0.22μm filtered.
Sarah Lewis –
Bacteriostatic Water arrived sealed and properly packaged. The safety measures during delivery were impressive, and the product quality was excellent
Jessica Parker –
Excellent experience. The Bacteriostatic Water was sealed, fresh, and safely delivered on time
Olivia Harris –
Excellent quality Bacteriostatic Water with safe packaging standards. Delivery went perfectly
Amanda Nelson –
The Bacteriostatic Water arrived sealed and undamaged. Great attention to safe delivery
Joshua Green –
Excellent standards from packaging to delivery. Everything arrived safely and intact
Matthew Johnson –
Professional handling and excellent product condition on arrival. Highly satisfied
David Collins –
I was skeptical before ordering, but everything went smoothly.