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BAC Water 2ml
BAC Water 2ml (Bacteriostatic Water) is a sterile solution formulated with benzyl alcohol to support safe and effective peptide reconstitution. Its compact size makes it ideal for smaller protocols or single-cycle use while still allowing multi-dose withdrawals.
Designed for convenience and reliability, it helps maintain the stability of reconstituted peptides while reducing contamination risk during handling.
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Product Information
BAC Water 2ml is a sterile, bacteriostatic solution containing 0.9% benzyl alcohol, specifically designed to inhibit bacterial growth and support safe peptide handling. Its smaller 2ml format makes it particularly useful for short-term use, precise dosing needs, or situations where minimal volume is preferred.
Unlike standard sterile water, this formulation allows for multiple withdrawals from the same vial, offering added flexibility while maintaining safety. It plays an important role in preserving the stability and integrity of peptides after reconstitution by reducing the risk of microbial contamination.
Commonly used in peptide research and wellness applications, BAC Water ensures that reconstituted solutions remain consistent and usable over time when stored correctly. Refrigeration after mixing is typically recommended to maintain optimal solution quality and extend usability.
| BAC Water 2ml — Technical Specifications | |
| Specification | Value |
| Product Name: | BAC Water 2ml |
| Compound Type: | Reconstitution vehicle, bacteriostatic water |
| CAS Number: | 7732-18-5 (water); 100-51-6 (benzyl alcohol) |
| PubChem CID: | 962 (water) |
| Molecular Formula: | H2O + 0.9% benzyl alcohol (C7H8O) |
| Molecular Weight (g/mol): | 18.02 (water) |
| Synonyms / Other Names: | Bacteriostatic Water for Injection, BAC Water, Sterile Water + Benzyl Alcohol |
| Appearance: | Clear, colourless sterile solution |
| Purity: | Research grade / USP-compatible |
| Solubility: | Miscible with water; aqueous reconstitution vehicle |
| Storage (Sealed): | Refrigerate 2–8 °C; use within 28 days of first opening |
| Storage (After Reconstitution): | Refrigerate 2–8 °C; multi-dose; discard after 28 days |
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Key Benefits
What You Get
BAC Water 2ml offers a practical and efficient solution for peptide reconstitution, especially for users who prefer smaller volumes without compromising safety or stability.

Compact & Convenient
The 2ml format is ideal for shorter protocols or precise usage, reducing waste while providing better control over preparation and storage.
Multi-Use Convenience
Formulated with benzyl alcohol, it supports multiple withdrawals from the same vial, making it more versatile than single-use sterile water options.
Stability & Longevity
Helps preserve the integrity and consistency of reconstituted peptides by minimizing contamination risk during handling and storage.
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Common Questions
Frequently Asked Questions
What is the 2ml BAC Water vial best suited for? +
The 2ml vial is ideal for reconstituting a single peptide vial, particularly 5mg or smaller vials where 1–2 mL is the standard reconstitution volume. It is a practical size for researchers working with one peptide at a time.
How many peptide vials can I reconstitute with one 2ml BAC Water vial? +
Typically one to two peptide vials depending on how much BAC water your protocol requires per vial. If you add 1 mL per peptide vial, you can reconstitute two. If your protocol calls for 2 mL per vial, one BAC Water vial covers one peptide vial.
Can I store unused BAC Water in the 2ml vial after partial use? +
Yes, refrigerate at 2–8 °C after first use and use within 28 days. Always sanitize the rubber stopper with an alcohol swab before each withdrawal to maintain sterility.
Does the small vial size affect sterility or quality? +
No, all three BAC Water sizes (2ml, 3ml, 10ml) are produced to the same sterility and purity standard. The only difference is volume. Choose the size that matches your typical reconstitution volume to minimize waste.
Is a Certificate of Analysis available for the 2ml BAC Water? +
Yes, a COA confirming sterility, benzyl alcohol concentration, and research-grade quality is available for download on this page. All BAC Water products are produced under the same quality standards regardless of vial size.






