99%+ Purity
Guaranteed per batch
4.9 847 verified reviews
Reconstitution Solution
Select mg:
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99.4% HPLC Purity — Independently verified by accredited US laboratory -
Endotoxin-Screened — LAL tested, LPS-free, endotoxin report available
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GMP-Certified Manufacturing — USA facility, ISO 9001:2015
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Lyophilized for Stability — Shipped cold-packed, intact for reconstitution
Molecular Weight
1,419.56 g/mol
Sequence Length
15 Amino Acids
Form
Lyophilized Powder
Storage
-20°C Long Term
Purity (HPLC)
99.4%
Manufacture
USA / GMP
4.9 847 verified reviews
Reconstitution Solution
⚠ Bac WaterSelect mg:
Select Pack:
Select Subscription:
-
99.4% HPLC Purity —
Independently verified by accredited US laboratory
-
Endotoxin-Screened —
LAL tested, LPS-free, endotoxin report available
-
GMP-Certified Manufacturing —
USA facility, ISO 9001:2015
-
Lyophilized for Stability —
Shipped cold-packed, intact for reconstitution
Molecular Weight
1,419.56 g/mol
Sequence Length
15 Amino Acids
Form
Lyophilized Powder
Storage
-20°C Long Term
Purity (HPLC)
99.4%
Manufacture
USA / GMP
Bacteriostatic Water is a sterile aqueous solution containing 0.9% benzyl alcohol, formulated to inhibit the growth and proliferation of microorganisms without directly destroying them. This bacteriostatic property makes it a critical resource in laboratory, experimental, and research environments, where sterility, chemical stability, and repeated vial access are essential.
Within controlled research workflows, bacteriostatic water is most commonly utilized as a diluent for the reconstitution of lyophilized (freeze-dried) research compounds, including peptides, proteins, and other sensitive materials that require precise hydration prior to experimental application. The presence of benzyl alcohol allows the solution to remain bacteriostatic after initial vial access, provided that strict aseptic techniques are maintained throughout handling.
Unlike preservative-free sterile water, which is intended for single-use laboratory applications, bacteriostatic water is designed to support multi-dose access in controlled research settings. This reduces material waste, supports procedural efficiency, and lowers the risk of accidental microbial introduction during repeated laboratory manipulation.
When used in conjunction with high-purity research materials, including LPS-free peptides, endotoxin-free peptides, and research peptides that are endotoxin tested, bacteriostatic water contributes to maintaining experimental consistency and reproducibility. Its formulation supports predictable dilution behavior and helps preserve the chemical stability and structural integrity of sensitive research compounds over extended study timelines.
It is important to note that while benzyl alcohol suppresses microbial growth, it does not sterilize contaminated solutions. Therefore, comprehensive laboratory sanitation protocols, validated storage conditions, and disciplined handling practices remain mandatory.
Due to these properties, bacteriostatic water has become a foundational component in modern research laboratories where precision, sterility, and compound integrity are required across long-term experimental programs.
“Note: Bacteriostatic Water is sold as a research reagent for peptide reconstitution. It is not a medical product and must not be used for any human or veterinary injection.”
In studies involving delicate cellular systems or tissue samples, this solution is particularly valuable for ensuring the accuracy of dilution processes and maintaining consistency across experimental replicates. Its bacteriostatic properties help mitigate microbial interference that could otherwise affect the validity and reproducibility of research outcomes.
For storage, bacteriostatic water should be maintained at ambient temperature and protected from light, heat, and moisture. Unopened vials generally retain stability for up to two years; however, once opened, the contents should be discarded within 28 days to preserve sterility and effectiveness.
Description
Significance in Peptide Research
Peptides, which are short amino acid chains, demand careful handling and controlled storage conditions. In most research laboratories, peptides are distributed in a lyophilized (freeze-dried) form that must be dissolved before use. Bacteriostatic water is commonly chosen for this reconstitution due to its sterility and antimicrobial properties.
Why Use Bacteriostatic Water for Peptides
Preservation of Sample Integrity: Because it is sterile and contains a bacteriostatic agent, this water protects delicate peptide samples from microbial contamination, maintaining their purity throughout experimental use.
Ease of Use: Since bacteriostatic water can be safely used multiple times, it enables researchers to draw several aliquots from one vial — ideal for working with expensive or limited peptide samples.
Short-Term Stability: The inclusion of benzyl alcohol inhibits bacterial growth, extending the usable life of peptide solutions for short-term storage.
Application in Protein Research
Protein studies also require stringent contamination control to ensure experimental reliability. Like peptides, many proteins arrive as powders that must be reconstituted. Bacteriostatic water provides a sterile and stable solvent environment for this purpose.
Benefits for Protein Work
Maintaining Purity: The bacteriostatic effect of benzyl alcohol helps preserve the cleanliness and integrity of protein samples, even after multiple withdrawals from the same vial.
Experimental Consistency: Using the same sterile solvent across multiple protein preparations improves reproducibility and reduces unwanted microbial variables.
Wide Compatibility: Bacteriostatic water is suitable for use with many proteins. However, researchers should always verify that their specific protein is not sensitive to benzyl alcohol, as it may interfere with certain enzymes or delicate protein structures.
Note: Always assess solvent compatibility during method validation to prevent adverse interactions with sensitive proteins.
Common Laboratory Applications
Beyond reconstituting peptides and proteins, bacteriostatic water serves several additional laboratory roles:
Sample Dilution: Used for creating precise concentrations in analytical and biological assays.
Buffer and Reagent Preparation: Acts as a clean base for preparing solutions and buffers.
Instrument Maintenance: Provides a sterile rinse for laboratory tools, including pipettes and automated liquid-handling systems.
In automated research environments, bacteriostatic water ensures that reagents remain sterile and uncontaminated over multiple handling cycles, supporting reliable and reproducible experimental outcomes.
Why Researchers Rely on Bacteriostatic Water
1. Multi-Dose Convenience in Controlled Environments
Most preservative-free sterile waters are unsuitable for repeated access once opened, as sterility cannot be maintained after the initial puncture. Bacteriostatic water, by contrast, remains usable for up to 28 days after first access when handled under sterile conditions. This extended usability helps streamline laboratory workflows, reduce unnecessary waste, and support efficient research operations.
2. Consistent and Predictable Reconstitution
Many research compounds require precise dilution ratios and controlled reconstitution conditions. Bacteriostatic water provides a stable environment that supports gradual, uniform mixing without introducing unwanted contaminants. Its production under USP-grade manufacturing standards helps ensure consistency from batch to batch.
3. Reduced Risk of Microbial Proliferation
The benzyl alcohol content does not merely serve as a labeling feature; it actively inhibits microbial growth within the vial following access. In laboratories where materials may be accessed multiple times over ongoing experiments, this antimicrobial property helps reduce variables related to contamination risk, supporting data reliability and experimental accuracy.
4. Compatibility with Sensitive Research Materials
Certain compounds are highly sensitive to environmental changes, including pH fluctuations and microbial exposure. Bacteriostatic water offers a gentler and more stable solution environment, making it a preferred choice for preparing delicate research materials that require careful handling.
5. Cost Efficiency for Repeated Laboratory Use
Because bacteriostatic water supports multiple withdrawals, it significantly reduces the need for frequent replacement. This efficiency is especially valuable in laboratories managing high research volumes or long-term studies, where budget allocation and material conservation are ongoing considerations.
Benefits of Bacteriostatic Water for Research Applications
- Extended usability of up to 28 days after initial vial puncture
- Manufactured to USP-grade sterility standards
- Contains 0.9% benzyl alcohol to inhibit bacterial growth
- Supports multi-dose laboratory access with reduced contamination risk
- Commonly utilized for peptide and compound reconstitution
- Cost-efficient for repeated laboratory handling
- Consistent dilution and predictable mixing behavior
- Suitable for controlled experimental environments
- Helps maintain compound integrity during preparation
- Reduces waste associated with single-use sterile waters
Why Choose Licensed Peptides for Research-Grade Bacteriostatic Water?
Licensed Peptides is committed to supplying research-grade bacteriostatic water and sterile laboratory solutions while maintaining competitive pricing and dependable service. Operating within the United States, we prioritize secure packaging, reliable fulfillment, and professional handling standards to help ensure products reach laboratories in optimal condition.
Our streamlined online ordering system allows researchers to purchase efficiently using secure checkout options, including major credit and debit cards. Orders are processed promptly once payment is confirmed, enabling timely shipment and dependable delivery for ongoing research schedules.
All products are intended strictly for laboratory and research use only and are not approved for human or animal administration.
Frequently Asked Questions (FAQs)
1. What is Bacteriostatic Water?
Bacteriostatic Water is a sterile water solution containing 0.9% benzyl alcohol, which functions as a preservative to inhibit bacterial growth. This formulation allows the solution to remain usable for multiple withdrawals over a defined period when handled properly under aseptic laboratory conditions.
2. What is the purpose of Bacteriostatic Water in research?
This bacteriostatic water is sold as a research reagent for peptide reconstitution. It is not a medical product and must not be used for any human or veterinary injection.
3. What is the difference between sterile water and bacteriostatic water?
Sterile water contains no preservatives and is intended for single-use applications only. Bacteriostatic water includes benzyl alcohol, permitting multi-dose use within controlled laboratory settings.
4. Why is Bacteriostatic Water commonly used in peptide research?
Peptides and similar research compounds often require a stable, sterile diluent. Bacteriostatic water provides predictable reconstitution behavior and supports repeated access without immediate contamination risk.
5. What makes Bacteriostatic Water different from saline?
Saline contains sodium chloride, whereas bacteriostatic water contains only sterile water and benzyl alcohol. They are not interchangeable unless specifically indicated by research protocols.
6. Is Bacteriostatic Water designed for multiple withdrawals?
Yes. The presence of benzyl alcohol allows the solution to remain bacteriostatic, supporting repeated vial access when proper aseptic techniques are consistently followed.
7. How long does Bacteriostatic Water remain usable after opening?
When stored correctly and handled aseptically, bacteriostatic water is generally viable for up to 28 days following the first vial puncture.
8. Does Bacteriostatic Water contain alcohol?
Yes. It contains 0.9% benzyl alcohol, which serves solely as a preservative to inhibit microbial growth.
9. Is refrigeration required after opening?
Refrigeration is not strictly required but is often preferred in laboratory settings to help support prolonged stability after opening.
10. Can Bacteriostatic Water be used alone as a research substance?
No. It is intended exclusively as a diluent or reconstitution medium for other research compounds.
11. What should be done if particles or cloudiness appear?
If the solution shows any discoloration, cloudiness, or visible particles, it should be discarded immediately, as this may indicate contamination.
12. Why does Bacteriostatic Water typically cost more than sterile water?
The inclusion of a preservative, multi-dose design and more stringent production standards contribute to its higher cost, along with its extended usability.
13. How can researchers verify if their Bacteriostatic Water is still viable?
Researchers should confirm that:
- The solution remains clear and particle-free
- The expiration date has not passed
- Fewer than 28 days have elapsed since initial use
14. Is Bacteriostatic Water approved for human or animal use?
No. Bacteriostatic Water supplied for research purposes is not approved for human or animal use and must only be used in laboratory or experimental settings.
15. Why is bacteriostatic water preferred when working with LPS-free peptides?
Bacteriostatic water supports controlled reconstitution of LPS-free peptides by reducing the risk of microbial proliferation during repeated vial access, helping preserve low endotoxin conditions critical for sensitive research assays.
16. Is bacteriostatic water suitable for endotoxin-free peptide studies?
Yes. When paired with endotoxin-free peptides, bacteriostatic water helps maintain solution integrity during multi-use laboratory workflows, provided endotoxin-controlled handling and storage protocols are followed.
17. How does bacteriostatic water support research peptides that are endotoxin tested?
For research peptides endotoxin tested prior to use, bacteriostatic water enables consistent dilution and repeat access without significantly increasing microbial risk, supporting reproducible experimental outcomes.
18. Does bacteriostatic water remove endotoxins from peptides?
No. Bacteriostatic water does not neutralize or remove endotoxins. It is used strictly as a controlled diluent, and endotoxin control depends on peptide purity, validated testing, and proper laboratory handling.
Referenced Citations
Test
Research
Our peptides are produced exclusively for laboratory and scientific research purposes.
Licensed Peptides™ products are developed using industry-standard synthesis and purification protocols, making them suitable for in vitro research, analytical testing, and experimental models.
Research-Grade Standards
- Synthesized via Solid Phase Peptide Synthesis (SPPS)
- Purified using advanced HPLC methods
- Verified through analytical quality control processes
- Screened for heavy metals and endotoxins
Consistency Across Batches
Strict process controls ensure reproducibility, allowing researchers to work with confidence across experiments.
Applications
Our peptides are commonly used in research involving:
- Cellular signaling pathways
- Tissue remodeling and repair mechanisms
- Extracellular matrix regulation
- Molecular biology and biochemical studies
Important Notice
All products are intended for research use only and are not for human or animal consumption, therapeutic use, or clinical application.
Why Buy From Us
At Licensed Peptides™, quality isn’t a claim. it’s a controlled, repeatable process.
Every peptide we produce follows a strict, pharma-grade workflow designed to ensure purity, stability, and consistency from synthesis to delivery.
What sets us apart:
ISO-Certified Cleanroom Manufacturing
All peptides are synthesized in sterile, controlled environments to eliminate contamination risk and ensure batch consistency.
>99% Verified Purity (HPLC Tested)
We use advanced High-Performance Liquid Chromatography (HPLC) to separate and verify peptide purity with precision.
Comprehensive Safety Testing
Each batch undergoes heavy metal and endotoxin screening to ensure it is free from hidden contaminants.
Pharma-Grade Raw Materials
We start with rigorously tested amino acids and reagents, ensuring integrity at the molecular level.
Lyophilized for Stability
Freeze-dried peptides maintain long-term stability, potency, and reliability for research applications.
Nitrogen-Sealed Vials
Every vial is protected from oxygen and moisture, preserving structural integrity during storage and transit.
Built for Serious Research
From synthesis to delivery, every step is engineered to meet the expectations of professionals who require accuracy, consistency, and reliability.
Shipping
We understand that timing and product integrity are critical for research.
Same-Day Shipping (USA)
All in-stock orders placed before our daily cutoff are shipped the same day from within the United States.
Fast Domestic Delivery (1–3 Days)
We use expedited carriers to ensure your peptides arrive quickly and reliably nationwide.
Cold Chain Protection
Products are stored in industrial-grade freezers prior to shipment to maintain stability and purity.
Secure & Protective Packaging
Each order is carefully packed to protect against temperature fluctuations, moisture exposure, and physical damage during transit.
Real-Time Tracking
You’ll receive tracking information immediately upon shipment so you can monitor delivery progress.
Consistency You Can Rely On
No long international delays, no customs issues. Just fast, dependable delivery from a U.S.-based operation.
Storage Instructions:
All of our products are manufactured using the Lyophilization (Freeze Drying) process, which ensures that our products remain 100% stable for shipping for up to 3-4 months.
Once the peptides are reconstituted (mixed with bacteriostatic water), they must be stored in the fridge to maintain stability. After reconstitution, the peptides will remain stable for up to 30 days.
Lyophilization is a unique dehydration process, also known as cryodesiccation, where the peptides are frozen and then subjected to low pressure. This causes the water in the peptide vial to sublimate directly from solid to gas, leaving behind a stable, crystalline white structure known as lyophilized peptide. The puffy white powder can be stored at room temperature until you’re ready to reconstitute it with bacteriostatic water.
Once peptides have been received, it is imperative that they are kept cold and away from light. If the peptides will be used immediately, or in the next several days, weeks or months, short-term refrigeration under 4C (39F) is generally acceptable. Lyophilized peptides are usually stable at room temperatures for several weeks or more, so if they will be utilized within weeks or months such storage is typically adequate.
However, for longer term storage (several months to years) it is more preferable to store peptides in a freezer at -80C (-112F). When storing peptides for months or even years, freezing is optimal in order to preserve the peptide’s stability.
For further information on proper storage techniques, click the link below:
Peptide Storage
99%+ Every Batch
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