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4.9

Bacteriostatic Water

In Stock
4 x 10 ML | 0.9% Benzyl Alcohol | Micron Filtered | Sterile Glass Vials

Original price was: $24.99.Current price is: $21.99.

Quanta Nova bacteriostatic water (BAC water) comes in a 4-pack of sterile 10 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
0.9% Benzyl Alcohol Preserved for multi-use applications
0.22 µm Filtered For contaminant-free purity
Sterile Vials Washed and sterilized prior to filling

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Bacteriostatic Water | 4 x 10 ML | 0.9% Benzyl Alcohol | Micron Filtered | Sterile Glass Vials
Bacteriostatic Water | 4 x 10 ML | 0.9% Benzyl Alcohol | Micron Filtered | Sterile Glass Vials Starter Pack · 1 pack
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COA Report

Certificate of Analysis

Batch No.
BAC-1224A
Date
2026-07-20
Benzyl Alcohol Content
1.03%
pH
5.9

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 10 mL 4-pack offers a convenient, consistent supply for laboratory use. Also available: the 10 mL 8-pack and the 3 mL 8-pack of bacteriostatic water.

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 10 mL vial is sealed with pretreated, alcohol-soaked rubber stoppers and an aluminum crimp cap to protect the contents between uses.

Key Benefits:

  • Multiple-access vials: 0.9% benzyl alcohol preservative allows repeated access during reconstitution work.

  • Filling stations are cleaned and sterilized before each production run.

  • 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.