BAC Water looks simple. That is exactly why it is easy to specify incorrectly.
For laboratories and biotechnology buyers, Bacteriostatic Water should not be evaluated only by the words printed on a vial.
Composition, preservative concentration, sterility requirements, packaging and batch documentation all matter.
What Is BAC Water?
BAC Water, commonly called Bacteriostatic Water, is a formulated aqueous solution containing a bacteriostatic preservative such as benzyl alcohol.
It is commonly searched as:
- BAC Water;
- Bacteriostatic Water;
- Bacteriostatic Water with Benzyl Alcohol;
- laboratory reconstitution solution;
- research-grade BAC Water.
An important technical point is often missed:
BAC Water is a mixture, not one single chemical compound.
Therefore, a CAS number such as 100-51-6 refers to the benzyl alcohol component — not to the complete BAC Water formulation.
Bacteriostatic Does Not Mean Bactericidal
This distinction matters.
Bacteriostatic means helping inhibit bacterial multiplication.
It does not mean that the solution automatically kills every microorganism or makes contaminated material sterile again.
For research laboratories, good handling procedures and the correct quality specification still matter.
BAC Water vs. Sterile Water: Are They the Same?
No.
Plain sterile water and bacteriostatic water are different formulations.
Regulated Bacteriostatic Water for Injection products may contain a specified concentration of benzyl alcohol and have defined requirements for sterility, pyrogens, packaging and other pharmaceutical attributes.
A research-grade BAC Water product should not automatically be assumed to meet pharmaceutical injectable specifications simply because the product names sound similar.
The intended application must match the supplied grade and supporting documentation.
What Do Online BAC Water Reviews Say?
Online discussions are mixed.
Positive comments often focus on:
- convenience in laboratory preparation;
- preservative-containing formulations;
- usefulness in workflows requiring repeated controlled handling.
Negative discussions often mention:
- stinging or burning associated with some products;
- inconsistent products from unknown sources;
- confusion over benzyl alcohol concentration;
- confusion between bacteriostatic and bactericidal activity.
Online reviews are not analytical evidence.
For B2B buyers, specifications and batch records are more useful than testimonials.
What Should Buyers Verify Before Sourcing BAC Water?
1. Verify the Actual Composition
Do not assume that every product marketed as “BAC Water” has exactly the same formulation.
Request the current product specification and batch-specific COA.
2. Confirm Preservative Information
Where benzyl alcohol is used, professional buyers should verify its specified concentration and applicable quality requirements.
3. Separate Research Grade From Pharmaceutical Grade
“Research grade,” “sterile,” “USP,” “nonpyrogenic” and “for injection” are not interchangeable descriptions.
Only use claims supported by the exact product specification and applicable regulatory status.
4. Review Batch Documentation
Depending on the intended research or manufacturing workflow, buyers may consider reviewing:
- composition;
- preservative specification;
- COA;
- SDS;
- sterility specification where applicable;
- storage requirements;
- vial and packaging information;
- lot traceability.
Research-Grade BAC Water from Sunone
Sunone (Hong Kong) Biopharmaceutical International Technology Co., Limited supplies BAC Water for qualified laboratory research, formulation development and manufacturing workflows.
Current product information includes:
Product: BAC Water
Synonyms: Bacteriostatic Water / Bacteriostatic Water with Benzyl Alcohol
Category: Laboratory Solution
Grade: Research Grade
Form: Liquid / Solution
Benzyl Alcohol Component CAS: 100-51-6
Documentation: COA, SDS and Specification Sheet available
Storage: 2–8°C, protected from light
Availability: On Request
Current B2B configurations include:
3 mL × 10 vials
10 mL × 10 vials
Final composition, preservative concentration, sterility specification and analytical information should always be confirmed against the applicable batch documentation.
Looking for a BAC Water supplier for laboratory or manufacturing projects?
View Sunone BAC Water Specifications ：
Send Sunone your required vial size, quantity, specification, packaging format and documentation requirements for a B2B quotation.
BAC Water FAQ
Is BAC Water a single chemical?
No. BAC Water is a formulated aqueous mixture. Chemical identifiers for benzyl alcohol refer to that component rather than the entire formulation.
What is the CAS number of benzyl alcohol?
The benzyl alcohol component is commonly identified as CAS 100-51-6.
Is bacteriostatic the same as sterile?
No. “Bacteriostatic” describes inhibition of bacterial growth, while “sterile” describes the absence of viable microorganisms under the applicable specification.
Is all BAC Water 0.9% benzyl alcohol?
Do not assume so. Commercial and regulated formulations can differ. Always verify the exact preservative concentration against the relevant product specification and COA.
What should B2B buyers request from a BAC Water supplier?
Professional buyers should consider requesting the batch-specific COA, composition specification, preservative information, SDS, applicable sterility specification, storage conditions and lot traceability.
This content is provided for scientific and educational purposes only. SUNONE research peptide is for qualified labrtorynt, diagnois, druc tor mmatct or veteimant, use.research only, Not for human consumption, clinical treame. Purchasers are responsible for complying with applicable laws and regulations in their jurisdiction.
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