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For research purposes only. This compound is not FDA approved. All data presented is from clinical trials for educational reference.

USP-grade bacteriostatic water, 30ml vial with 0.9% benzyl alcohol. For research use only.
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Bacteriostatic Water | 30mL | Laboratory Diluent
For In Vitro Research Use Only — Not for Human or Veterinary Use
Specifications
Description
Bacteriostatic Water is a sterile preparation of distilled water containing 0.9% benzyl alcohol as a preservative agent. In laboratory research settings, it is commonly employed as a diluent for lyophilized compounds where multi-use vial stability is a research variable. Studies utilizing this diluent examine preservation kinetics, peptide solubility profiles, and solution stability across defined experimental windows in controlled in vitro environments.
Note: Benzyl alcohol compatibility varies across peptide compounds. Research protocols should verify chemical compatibility prior to use in solubility or stability studies.
For Research Use Only: This product is intended solely for in vitro laboratory research. It is not approved for human or veterinary use and is not intended for any therapeutic, diagnostic, or clinical application.
⚠️ Disclaimer: All information provided is strictly educational. No claim of efficacy or safety is made. Buyers assume full responsibility for ensuring proper use under federal and local research guidelines.
Terms of Sale: By purchasing from Midwest Peptide, you affirm that you are a qualified researcher with the experience to safely handle and store research materials. All sales are final. The supplier is not liable for any misuse, misrepresentation, or unintended outcomes related to this product.
Bacteriostatic water is sterile water for injection with 0.9% benzyl alcohol added as a bacteriostatic preservative. The benzyl alcohol allows the water to be reused multiple times without supporting bacterial growth between uses. Supplied here as a 30 ml USP-grade vial for laboratory research only.
Sterile water for injection contains no preservative and must be discarded after a single use. Bacteriostatic water contains 0.9% benzyl alcohol, which inhibits bacterial growth and allows multiple draws from the same vial within the manufacturer-specified period (typically 28 days).
Reconstituting lyophilized research peptides for in-vitro experimental work. The benzyl alcohol preservative is compatible with most peptide chemistries; check peptide-specific compatibility data when working with sensitive sequences.
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Research articles and insights related to Bacteriostatic Water

Learn how bacteriostatic water protects research peptides from microbial contamination and molecular degradation during long-term laboratory studies.
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Explore the science of bacteriostatic water in the lab. Learn how 0.9% benzyl alcohol preserves research peptides and discover proper reconstitution protocols.
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Learn the role of bacteriostatic water in peptide research. Explore the function of benzyl alcohol, proper reconstitution techniques, and storage protocols.
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Not for human consumption. This product is sold exclusively for research and educational purposes. It is not intended to diagnose, treat, cure, or prevent any disease.
All clinical trial data and research findings presented on this page are sourced from peer-reviewed journals and official publications. They are provided for educational reference only and should not be interpreted as medical advice or product claims.
By purchasing this product, you confirm that you are a qualified researcher and will use it in accordance with all applicable laws and regulations.
Once the vial septum is first punctured, the manufacturer typically specifies a 28-day in-use period when stored at recommended temperature. Reference the COA and product label for batch-specific guidance.
Store at controlled room temperature (15-25C / 59-77F), away from direct light. Do not freeze. Once opened, keep tightly capped between uses and discard at the end of the manufacturer-specified in-use period.
USP-grade bacteriostatic water has regulatory clearance as a sterile diluent. The product supplied here is for laboratory and research use only and is not for diagnostic, therapeutic, or human use.