Batch documentation
Certificate of analysis
Apex Laboratory results for the listed configurations. Match the lot on your label with the report.
Bacteriostatic Water - 10 ml
- Benzyl alcohol active content
- 90.2142 mg/vial
- Benzyl alcohol concentration
- 9.02142 mg/mL
- Bacterial endotoxins
- <0.025 EU/mL
- Sterility: FTM
- No growth at 14 days in all 20 units
Reagent quality measurements
About this graph
Recorded scalar results against their stated specifications. These are measured endpoint summaries, not instrument traces.
Measured concentration
About this graph
Calibrated active content, concentration or activity compared with the stated same-unit specification. Each row uses its own labeled scale; no conversion from chromatographic purity is made.
Bacteriostatic Water - 3 ml
- Benzyl alcohol active content
- 27.0124 mg/vial
- Benzyl alcohol concentration
- 9.00414 mg/mL
- Bacterial endotoxins
- <0.025 EU/mL
- Sterility: FTM
- No growth at 14 days in all 20 units
Reagent quality measurements
About this graph
Recorded scalar results against their stated specifications. These are measured endpoint summaries, not instrument traces.
Measured concentration
About this graph
Calibrated active content, concentration or activity compared with the stated same-unit specification. Each row uses its own labeled scale; no conversion from chromatographic purity is made.
Bacteriostatic Water is a USP-grade research diluent / sterile solvent — sterile water preserved with 0.9% benzyl alcohol — supplied by Apex Laboratory for reconstituting lyophilized research peptides into a measured-concentration solution. For in-vitro laboratory research and development use only.
Compound Overview
The listing identifies a bacteriostatic-water laboratory reagent. Review its applicable configuration record and label for composition, tested units, sterility method and reporting limits. A preservative does not certify sterility after a vial is opened or establish compatibility with every compound.
Using Bacteriostatic Water for Peptide Reconstitution
Bacteriostatic water is the standard diluent for reconstituting lyophilized research peptides into a known concentration. For the full method, see our guide on how to reconstitute peptides, and use the peptide reconstitution calculator to determine mg/mL and mcg/mL from your vial mass and solvent volume. For background on the diluent itself, see what bacteriostatic water is.
Research Background & Published Literature
A preserved diluent and a prepared peptide solution have different handling and stability questions. Before preparing a research solution, check the exact compound, solvent composition, container and validated laboratory method. A generic multi-dose-container interval does not establish a post-opening sterility guarantee or the stability of the resulting solution.
Researchers can consult the following reference for the standards governing sterile and bacteriostatic water used in laboratory reconstitution:
Technical Specifications
- Product Name: Bacteriostatic Water
- Classification: Research Diluent / Sterile Solvent
- Structural Description: Sterile water for injection preserved with 0.9% benzyl alcohol (USP grade)
- Physical Form: Clear sterile liquid
- Analytical Verification: Sterility, bacterial endotoxins (LAL), pH, and particulate matter — see batch Certificate of Analysis
- Intended Use: In-vitro research use only — not for human consumption
Storage, Handling & Stability Guidelines
Follow the applicable product label and documented laboratory procedure for storage and handling. Use an appropriate aseptic method and retain the product and preparation identifiers. This page does not establish a universal post-opening sterility or prepared-solution hold time; confirm the source-specific basis before setting one.
- Minimize time at ambient temperature during handling to preserve compound integrity.
- Avoid moisture exposure by resealing vials promptly after each withdrawal.
- Use appropriate personal protective equipment and follow your institution’s chemical safety protocols at all times.
- Label all aliquots with the compound name, concentration, date of reconstitution, and operator initials for complete traceability.
Quality Assurance & Analytical Verification
Apex Laboratory applies a batch-level quality protocol to bacteriostatic water before it enters inventory. Each lot is verified for sterility, bacterial endotoxins (by LAL assay), pH, and particulate matter, and confirms the 0.9% benzyl alcohol preservative content. See Bacteriostatic Water – 10 ml — lot APX-2026-0512-B, issued 2026-05-12, for the recorded results, acceptance criteria and methods.
Frequently Asked Questions
What is the difference between bacteriostatic water and sterile water?
Bacteriostatic water contains 0.9% benzyl alcohol as a preservative, allowing multiple withdrawals over up to 28 days. Plain sterile water has no preservative and must be discarded after a single use.
How much bacteriostatic water do I need per peptide vial?
The amount depends on the desired concentration. A common research protocol is 1–2 mL per vial. Use our reconstitution calculator or contact support for specific protocol guidance.
Is this product approved for human use?
No. All compounds sold by Apex Laboratory are classified as chemical research reagents intended strictly for in-vitro laboratory research. They are not approved for human consumption, veterinary use, or any therapeutic application. Purchasers who imply intended bodily use will have their orders cancelled and accounts permanently suspended.
What documentation is available for this compound?
Each batch ships with a Certificate of Analysis reporting sterility, bacterial endotoxins (LAL), pH, particulate matter, and benzyl alcohol content. View current COAs in our Lab Verified archive or request specific batch documentation through our contact page.
Is bulk ordering available?
Yes. For bulk quantities, custom packaging requirements, or recurring supply agreements, contact our team with the compound name, desired quantity, preferred vial size, and your target delivery timeline. Volume pricing is available for qualifying orders.
Related Research Compounds
Researchers working with bacteriostatic water may also need related compounds and supplies available from Apex Laboratory, including BPC-157, Semaglutide, Acetic Acid Solution 1% (10ml). Explore our complete research catalog to browse all available peptides, reagents, and laboratory supplies, or visit our About page to learn more about our quality verification process.
Shipping, Packaging & Delivery
Orders with cleared payment before 2:00 PM ET on a business day usually ship the same business day. Payment, address or inventory review and carrier conditions can affect timing. Review the shipping information for handling exceptions and current delivery estimates. Contact support before ordering if your research requires a particular packaging or shipping condition.
Research Use Disclaimer
For in-vitro research use only. Not for human consumption. All products sold by Apex Laboratory are intended exclusively for qualified researchers, accredited laboratories, and educational institutions. Purchasers assume full responsibility for ensuring safe handling, proper storage, and compliance with all applicable federal, state, and local laws, regulations, and institutional policies governing the purchase and use of chemical research reagents.
