This bacteriostatic water research guide covers what it is, why it is used, and how to use it for peptide reconstitution.
Research Compound · Bacteriostatic Water
Bacteriostatic Water — Lab-Grade. Ready to Ship.
Sterile bacteriostatic water with 0.9% benzyl alcohol. The standard reconstitution solvent for all lyophilized research peptides. 10mL multi-dose vial. USP-grade sterility standards.
COA included with every order For laboratory research use only
HPLC Verified≥98% purity confirmed per lot
COA IncludedLot-specific certificate
Mass Spec IDIdentity confirmed per batch
USA OperationsVerified. Documented.
About This Compound
What Is Bacteriostatic Water?
Bacteriostatic water is sterile water for injection preserved with 0.9% benzyl alcohol — a concentration sufficient to inhibit microbial growth and allow multiple draw-offs from a single vial without contamination risk. It is the standard reconstitution solvent for lyophilized research peptides and many other injectable research compounds.
The 0.9% benzyl alcohol preservative maintains sterility across multiple needle entries — essential for research protocols requiring multiple preparations from a single vial. It is distinct from regular sterile water (single-use only) and saline (contains sodium chloride). Most lyophilized peptide reconstitution protocols specify bacteriostatic water as the preferred solvent.
Room temperature (15–30°C) or refrigerated (2–8°C)
Compatibility
Compatible with all CoreVionRX lyophilized peptides
Preclinical Research
What Researchers Study Bacteriostatic Water For
All published research is preclinical — cell cultures and animal models.
Standard Peptide Reconstitution
Bacteriostatic water is the most widely used reconstitution solvent for lyophilized research peptides. The 0.9% benzyl alcohol concentration is sufficient to maintain sterility while remaining compatible with most peptide stability profiles.
USP General Chapter Injections and Implanted Drug Products
Multi-Dose Protocol Support
Unlike single-use sterile water vials, bacteriostatic water’s preservative allows multiple needle entries from a single vial — essential for research labs reconstituting peptides for use across multiple experiments or time points.
FDA Guidance: Sterile Drug Products Produced by Aseptic Processing
Solubility & Compatibility
Bacteriostatic water maintains a neutral pH compatible with most research peptide stability profiles. It is preferred over saline for peptide reconstitution as sodium chloride can affect solubility of certain compounds at higher concentrations.
Remington: The Science and Practice of Pharmacy, 23rd Ed.
Why CoreVionRX
Documentation Is the Product.
Most vendors claim purity. We document it. Every compound ships with independent lab verification.
Independent HPLC Testing
Every batch through reversed-phase HPLC before listing. Chromatogram on your COA.
Lot-Specific COA
Your COA tied to your production lot — not a generic template.
Transparent Sourcing
We source and verify. Not a synthesis lab. That honesty builds the brand.
Stability Guaranteed
Lyophilized powder — stable at −20°C for 24+ months.
Common Questions
Straight Answers.
What is bacteriostatic water and why do I need it for peptides?
Bacteriostatic water is sterile water preserved with 0.9% benzyl alcohol. The preservative inhibits bacterial growth, allowing multiple draw-offs from a single vial — essential for research protocols. Most lyophilized peptide reconstitution protocols specify bacteriostatic water because standard sterile water vials are single-use only.
Why bacteriostatic water instead of saline or regular sterile water?
Saline (0.9% sodium chloride) can affect the solubility of some peptides at certain concentrations. Regular sterile water vials are single-use — once opened, they must be discarded. Bacteriostatic water’s benzyl alcohol preservative maintains multi-dose sterility while providing a neutral, peptide-compatible solvent.
How much bacteriostatic water do I need to reconstitute a peptide?
It depends on your target concentration. Use our peptide reconstitution calculator to determine the exact volume. For example, to make a 2mg/mL solution from a 5mg vial, you would add 2.5mL of bacteriostatic water.
Can I use bacteriostatic water for all peptides?
Bacteriostatic water is compatible with all lyophilized peptides in the CoreVionRX catalog. For compounds with specific solubility requirements (such as acetic acid for some peptides), the product’s COA or protocol notes will specify. When in doubt, bacteriostatic water at neutral pH is the default standard.
How do I store bacteriostatic water after opening?
Store at room temperature (15–30°C) or refrigerated (2–8°C) after opening. The benzyl alcohol preservative maintains sterility for up to 28 days after first use. Discard if any cloudiness or particulate matter is observed.
Bacteriostatic Water Research: What to Know Before You Buy
bacteriostatic water research from CoreVionRX is verified at ≥99%% HPLC purity with mass spectrometry confirming the exact peptide sequence.
Every bacteriostatic water research vial ships with HPLC verification and a lot-specific COA.
Every vial of bacteriostatic water research ships with a lot-specific certificate of analysis so you can verify exactly what is in the vial you received.
CoreVionRX bacteriostatic water research is verified by independent third-party testing — mass spectrometry confirms sequence identity and HPLC confirms purity.
Store bacteriostatic water research as a lyophilized powder in cool, dark conditions; once reconstituted, keep refrigerated and use within your protocol window.
For accurate reconstitution of bacteriostatic water research, use the peptide calculator to calculate the exact water volume needed.
Researchers working with bacteriostatic water research should confirm ≥99%% HPLC purity and a lot-specific COA with every order.
For reconstitution, add bacteriostatic water slowly and store bacteriostatic water research refrigerated after mixing. Use the peptide calculator to get concentration right.
When sourcing bacteriostatic water research, the most important check is purity: every CoreVionRX vial is verified at ≥99% HPLC with a lot-specific COA.
Peer-reviewed research on bacteriostatic water research is indexed at PubMed. For research use only.
All CoreVionRX research peptides ship with a lot-specific COA, ≥99%% HPLC purity, and mass-spec identity confirmation. Use our reconstitution calculator for prep. For research use only.
