BAC Water

99%+ Purity USA Tested

Research Use Only. Not for Human or Veterinary Use

Bacteriostatic Water: Sterile, non-pyrogenic, 0.9% benzyl alcohol preservative. For laboratory peptide reconstitution.

$10.00

175 in stock

Product Name	Bacteriostatic Water (BAC Water)
Preservative	0.9% Benzyl Alcohol
Appearance	Clear, colorless liquid
Sterility	Sterile, non-pyrogenic
Volume	30mL
Storage	Room temperature (15–25°C), protected from light
Use	Laboratory peptide reconstitution

This product is not intended for human or animal use. For scientific research only.

VivePeptides provides detailed analytical results including High-Performance Liquid Chromatography (HPLC) and mass spectrometry data for all peptides. These reports confirm peptide purity, composition, and molecular accuracy, giving researchers full transparency and confidence in the materials used for their studies.

All VivePeptides products undergo independent third-party laboratory testing to verify identity, purity, and consistency. This additional layer of quality control ensures that each peptide meets strict research-grade standards before being made available for laboratory use.

VivePeptides peptides should be stored in a cool, dry environment and protected from light and moisture. Lyophilized peptides are best kept refrigerated or frozen until use to maintain stability. Once reconstituted for research purposes, peptides should be stored according to standard laboratory protocols, typically under refrigeration, and handled using proper aseptic techniques to preserve integrity throughout the study period.

OVERVIEW

What Is Bacteriostatic Water?

Bacteriostatic water (commonly referred to as BAC water) is sterile water that contains 0.9% benzyl alcohol as a bacteriostatic preservative. Unlike plain sterile water, which must be used immediately after opening due to contamination risk, bacteriostatic water is designed for multi-dose use — the benzyl alcohol inhibits microbial growth, allowing the vial to be accessed multiple times over a 28-day period while maintaining sterility.

BAC water for peptides is the preferred reconstitution solvent in research laboratories that work with lyophilized peptides. Bacteriostatic water 30ml vials from VivePeptides are manufactured to USP grade standards and USA tested to ensure consistent quality for peptide reconstitution. The 0.9% benzyl alcohol concentration provides effective bacteriostatic activity without interfering with peptide stability or activity in most research applications. When researchers buy bacteriostatic water from a trusted source like VivePeptides, they ensure their reconstituted peptides maintain integrity throughout multi-use research protocols.

Bacteriostatic Solvent

Sterile water with 0.9% benzyl alcohol for multi-use peptide reconstitution

USP Grade

Manufactured to United States Pharmacopeia standards

USA Tested & Verified

Quality tested at USA-based facilities to confirm sterility and composition

RESEARCH

Bacteriostatic Water Mechanism of Action in Research

The mechanism by which bacteriostatic water maintains sterility during multi-use applications centers on the bacteriostatic properties of benzyl alcohol. Understanding this mechanism helps researchers make informed decisions about solvent selection for their peptide research.

Benzyl Alcohol Bacteriostatic Activity

Benzyl alcohol at 0.9% concentration inhibits microbial growth through disruption of bacterial cell membrane integrity. The alcohol permeabilizes bacterial membranes, disrupting the proton motive force and interfering with energy-dependent cellular processes. This mechanism is bacteriostatic (growth-inhibiting) rather than bactericidal (killing), meaning it prevents new microbial growth from contaminating the solution during repeated access.

Peptide Compatibility

Research has demonstrated that 0.9% benzyl alcohol is compatible with the vast majority of research peptides. The low concentration does not significantly alter solution pH, ionic strength, or peptide folding in most applications. Studies indicate that reconstituted peptides in bacteriostatic water maintain stability and activity profiles comparable to those reconstituted in plain sterile water, with the added benefit of extended multi-use capability.

Multi-Use Sterility Maintenance

The practical advantage of bacteriostatic water in research settings is its ability to maintain a sterile field across multiple withdrawals. Each time a needle penetrates the rubber stopper, trace microorganisms may be introduced. The benzyl alcohol prevents these organisms from proliferating, maintaining solution sterility for up to 28 days when proper aseptic technique is used. —

COMPARISON

Bacteriostatic Water vs Sterile Water: Research Solvent Comparison

Understanding the difference between bacteriostatic water vs sterile water is essential for proper peptide reconstitution in research settings.

Feature	Bacteriostatic Water	Sterile Water
Preservative	0.9% Benzyl Alcohol	None
Multi-Use	Yes — up to 28 days after opening	No — single use only
Sterility After Opening	Maintained by bacteriostatic agent	Compromised upon first access
Peptide Compatibility	Compatible with most research peptides	Compatible with all peptides
Shelf Life (Opened)	28 days	Immediate use required
USP Grade Available	Yes	Yes
Cost per Reconstitution	Lower (multi-use)	Higher (single-use waste)
Best For	Multi-use research peptide reconstitution	Single-use applications, benzyl alcohol-sensitive compounds

For most peptide research applications, bacteriostatic water is the preferred choice due to its multi-use capability and extended post-opening stability. Sterile water is appropriate when benzyl alcohol must be avoided or when the entire vial will be used in a single session. Buy bacteriostatic water from VivePeptides for USP grade quality from a trusted USA supplier.

RESEARCH STUDIES

Bacteriostatic Water Research Applications & Published Studies

Bacteriostatic water is a foundational research reagent with documented applications across pharmaceutical science, microbiology, and peptide chemistry.

Benzyl Alcohol Preservative Efficacy

Published research on benzyl alcohol as a pharmaceutical preservative spans decades. The United States Pharmacopeia (USP) has established monographs defining the specifications for bacteriostatic water, including benzyl alcohol concentration, sterility testing requirements, and endotoxin limits. Studies have validated the antimicrobial efficacy of 0.9% benzyl alcohol against common environmental contaminants under standard laboratory conditions.

Peptide Reconstitution and Stability Studies

Published research in pharmaceutical sciences has examined the stability of various peptides reconstituted in bacteriostatic water. Studies indicate that benzyl alcohol at the standard 0.9% concentration does not significantly affect peptide secondary structure, biological activity, or degradation kinetics for most research peptides. Manning et al. (Pharmaceutical Research, 2010) published comprehensive reviews on peptide stability in various solvent systems relevant to research applications.

Laboratory Best Practices

Research on aseptic technique and reagent handling has established best practices for bacteriostatic water use in laboratory settings. Studies confirm that proper technique — including swabbing the stopper with 70% alcohol before each access and using sterile needles — maximizes the effective multi-use lifespan of bacteriostatic water in research environments.

QUALITY ASSURANCE

Quality & Testing Standards

HPLC & Mass Spectrometry

Every batch of bacteriostatic water undergoes sterility testing and endotoxin screening to confirm the absence of microbial contamination and pyrogens.

Third-Party Verified

All bacteriostatic water is independently verified through third-party USA-based testing facilities with lot-specific documentation.

≥99% Purity Standard

VivePeptides bacteriostatic water is manufactured to USP grade specifications, including verified 0.9% benzyl alcohol concentration and sterility.

FAQ

Frequently Asked Questions About Bacteriostatic Water

What is bacteriostatic water used for in research?

Bacteriostatic water is used as a reconstitution solvent for lyophilized research peptides. Its 0.9% benzyl alcohol preservative allows multi-use access over 28 days while maintaining sterility, making it the preferred solvent for peptide research laboratories.

What grade is VivePeptides bacteriostatic water?

VivePeptides bacteriostatic water is manufactured to USP (United States Pharmacopeia) grade standards. Each batch is tested at USA-based facilities to verify sterility, benzyl alcohol concentration, pH, and the absence of endotoxins.

How should bacteriostatic water be stored?

Store bacteriostatic water at room temperature (20–25°C), protected from light. Once the vial seal is first punctured, use within 28 days. Do not freeze bacteriostatic water.

Can bacteriostatic water be used with all peptides?

Bacteriostatic water is compatible with the vast majority of research peptides. In rare cases involving peptides sensitive to benzyl alcohol or studies requiring preservative-free conditions, sterile water may be preferred. For standard peptide reconstitution in research settings, BAC water is the recommended solvent.

Is VivePeptides bacteriostatic water third-party tested?

Yes. Every lot of VivePeptides bacteriostatic water undergoes independent third-party testing at USA-based facilities, including sterility, endotoxin, pH, and benzyl alcohol concentration verification. Results are available upon request.

Related Research Peptides

Explore other research-grade peptides available from VivePeptides. Each product meets the same rigorous purity and testing standards.

BPC-157

Research grade gastric pentadecapeptide

Semaglutide

GLP-1 receptor agonist research peptide

GHK-Cu

Copper peptide for skin biology research

CJC-1295 No DAC + Ipamorelin

Growth hormone secretagogue blend

Explore More Research Peptides

All Peptides → · Tirzepatide · Retatrutide · Selank · Semax · MOTS-c · NAD+ · SNAP-8