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Bacteriostatic Water

Bacteriostatic Water

(356 reviews)

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Benzyl Alcohol Reconstitution USP Grade
Bacteriostatic Water for injection (USP grade) contains 0.9% benzyl alcohol as a preservative. Used for reconstitution of lyophilized peptides for research applications.
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Required to reconstitute lyophilized peptides before use in research.

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0.9%

PRESERVATIVE

Benzyl alcohol

USP

GRADE

Pharmaceutical standard

UK

MANUFACTURED

Domestic production

100%

STERILE

Filtered & tested

  • USP Grade sterile water
  • 0.9% Benzyl Alcohol preservative
  • Multi-use vial
  • Sterile filtered
  • Manufactured in UK
  • Research Use Only
  • Clinical Research Results

Key findings from published peer-reviewed research studies.

0.9%

Benzyl Alcohol

USP

Grade Certified

28d

Multi-Dose Use

100%

Sterile Filtered

Preservative Efficacy

0.9% benzyl alcohol maintains sterility for multi-dose use

Studies confirm that the 0.9% benzyl alcohol concentration effectively inhibits microbial growth while remaining well below toxicity thresholds, enabling safe multi-dose vial usage.

Peptide Compatibility

Compatible with the vast majority of lyophilized peptides

Bacteriostatic water has been validated as a safe reconstitution vehicle for peptides, maintaining structural integrity and biological activity of reconstituted compounds.

Stability Studies

Reconstituted peptide solutions show extended stability vs. sterile water

Comparative studies show that peptides reconstituted in bacteriostatic water maintain purity and potency significantly longer than those reconstituted in sterile water for injection.

  • Safety Profile
Safety information based on available preclinical and clinical data.

USP

Compliance

0.22μm

Sterile Filtered

28d

Post-Puncture Life

Benzyl Alcohol Content

Contains 0.9% benzyl alcohol as a bacteriostatic preservative. Concentration is well within established safety limits for research use.

BP Compliance

Manufactured in accordance with British Pharmacopoeia (BP) standards for Water for Injection with antimicrobial preservative.

Sterility Assurance

Sterile filtered (0.22μm) and aseptically filled. Each batch undergoes sterility testing per USP <71>.

Multi-Dose Use

Designed for multi-dose use. The benzyl alcohol preservative inhibits microbial growth after initial puncture of the vial septum.

Storage

Store at controlled room temperature (20-25°C). Protect from light. Do not freeze. Discard 28 days after first puncture.

Disclaimer: This product is intended for research use only. Not for human consumption, therapeutic use, or diagnostic purposes.

  • Compound Information
Detailed chemical and physical properties.
Grade

USP

Preservative

0.9% BA

pH

4.5–7.0

Shelf Life

24 months

Product Type Bacteriostatic Water for Injection, USP
Active Preservative Benzyl Alcohol 0.9% w/v
Base Water for Injection (WFI), USP
pH Range 4.5 – 7.0
Osmolality ~0 mOsmol/kg (hypotonic)
Sterility Sterile filtered (0.22μm), aseptically filled
Pyrogen Testing Tested per USP <85> (Bacterial Endotoxins)
Container Type I borosilicate glass vial with butyl rubber stopper
Manufacturing cGMP compliant facility, UK
Shelf Life 24 months (unopened)
  • Frequently Asked Questions
Common questions about Tirzepatide.

What is Bacteriostatic Water?

Bacteriostatic Water for Injection (USP) is sterile water containing 0.9% benzyl alcohol as a bacteriostatic preservative. It is used as a diluent for reconstituting lyophilized peptides and other compounds.

How is it different from Sterile Water for Injection?

Unlike sterile water (single-use), bacteriostatic water contains benzyl alcohol which prevents microbial growth after opening, allowing multi-dose use from a single vial for up to 28 days.

How much should I use to reconstitute a peptide?

Reconstitution volume depends on the peptide and desired concentration. Common volumes range from 1-2mL per vial. Consult your specific research protocol for exact volumes.

Does benzyl alcohol affect peptide stability?

At 0.9% concentration, benzyl alcohol has been shown to be compatible with the vast majority of peptides without affecting their stability or biological activity.

How should reconstituted peptides be stored?

Store reconstituted peptide solutions at 2-8°C (refrigerated). Use within the timeframe specified by the peptide manufacturer, typically 14-30 days.

  • Sources & References

Peer-reviewed publications and reference materials.

BP Monograph: Bacteriostatic Water for Injection

British Pharmacopoeia Commission

BP (2023)

Antimicrobial effectiveness of benzyl alcohol in multi-dose parenteral products

Meyer BK, Ni A, et al.

Journal of Pharmaceutical Sciences (2007)

DOI: 10.1002/jps.20900

Stability of peptides in aqueous solutions: effect of excipients

Manning MC, Patel K, et al.

Pharmaceutical Research (2010)

DOI: 10.1007/s11095-009-0045-6

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