Bacteriostatic Water
In Stock$21.99
Quanta Nova bacteriostatic water (BAC water) comes in an 8-pack of sterile 3 mL glass vials. Each vial contains 0.9% benzyl alcohol, is filtered through a 0.22 µm PES membrane, and is washed and heat-sterilized before filling. Every batch is tested, with a certificate of analysis available.
- 0.9% Benzyl Alcohol – Preserved for multi-use applications
- Sterile and Micron-Filtered – 0.22 µm PES filtration for contaminant-free purity
- Sterile Vials – Vials are washed and sterilized prior to filling
COA Report
Certificate of Analysis
Batch Summary
This batch has been independently tested, verified, and documentation is available for review.
Description
Quanta Nova bacteriostatic water (BAC water) is a laboratory reconstitution solution containing 0.9% benzyl alcohol. This 3 mL 8-pack offers a convenient, consistent supply for laboratory use.
Each BAC water batch begins with type 1 ultrapure water. We add 0.9% benzyl alcohol, then filter the solution through a 0.22 µm PES membrane. Every new batch is independently tested for acceptable pH range and benzyl alcohol content. With each new batch, we provide a certificate of analysis available for review and verifiable by the independent testing lab (Vanguard Labs).
The 0.9% benzyl alcohol acts as a preservative that helps to inhibit microbial growth, so a vial can be accessed more than once during laboratory work. This makes it a stable, consistent aqueous solution for reconstitution applications that call for a preserved diluent.
A 0.22-micron PES (polyethersulfone) membrane is a high-efficiency sterile filter known for its contaminant-removal properties. The result is a clear, particulate-free solution that meets stringent purity standards.
We use Type I borosilicate glass vials. Each vial goes through a two-step pretreatment process: an alcohol rinse for sterilization, followed by an acid wash that helps keep the pH of the unbuffered solution consistent.
Each 3 mL vial is sealed with pretreated, alcohol-soaked rubber stoppers and an aluminum crimp cap to protect the contents between uses.
Key Benefits:
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Multiple-access vials: 0.9% benzyl alcohol preservative allows repeated access during reconstitution work.
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Filling stations are cleaned and sterilized before each production run.
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Type I borosilicate glass vials are washed and sterilized prior to filling.
- Every batch is 0.22 µm filtered and independently tested, with a published verifiable COA.
Disclaimer: For research use only.
BAC Water FAQ
What is bacteriostatic water (BAC water)?
Bacteriostatic water (BAC water) is sterile water with 0.9% benzyl alcohol. The benzyl alcohol is a preservative that slows bacterial growth after a vial is opened. Read more: What Is Bacteriostatic Water?
How is BAC water different from sterile water?
Sterile water has no preservative and is meant for one use. BAC water contains benzyl alcohol, so a vial can be accessed more than once. Read more: Bacteriostatic Water vs Sterile Water
Is reconstitution solution the same as BAC water?
Quanta Nova BAC water is a reconstitution solution containing 0.9% benzyl alcohol. Not every product labeled “reconstitution solution” uses the same formula, so check the label and certificate of analysis. Read more: Reconstitution Solution vs BAC Water
How long does BAC water last after opening?
Quanta Nova recommends no more than 28 days after first access. Read more: How Long Does Bacteriostatic Water Last?
Should I choose 3 mL or 10 mL vials?
Both contain the same 0.9% benzyl alcohol formula. Because each vial has a 28-day limit after first access, 3 mL vials suit laboratory work that uses smaller volumes, so less is left unused; 10 mL vials suit larger volumes. 3 mL 8-Pack · 10 mL 4-Pack · 10 mL 8-Pack
Is every batch tested?
Yes. Each batch is independently tested, and the certificate of analysis is published on our test results page.
