A Bacteriostatic Water vial can be used multiple times, with a typical multiple-dose vial containing 10ml of sterile water with ~0.9% benzyl alcohol as a bacteriostatic preservative, allowing for up to 20-30 draws or uses, assuming proper aseptic technique is followed to prevent contamination. The key factor in determining the number of uses is not the volume of the vial itself, but rather the ability to maintain sterility during each use, with the USP General Chapters: Sterility <71> and Antimicrobial Effectiveness <51> providing guidelines for the handling and use of bacteriostatic water. According to these standards, a multiple-dose vial can be used multiple times if it is handled and stored properly, with 20-30 uses being a common range for a 10ml vial.
Introduction to Bacteriostatic Water
Bacteriostatic Water, USP is a type of sterile water that contains a bacteriostatic preservative, typically benzyl alcohol at a concentration of ~0.9%. This preservative helps to prevent the growth of bacteria and other microorganisms in the water, making it ideal for use in laboratory settings where sterility is critical. Bacteriostatic Water is commonly used as a diluent for laboratory research chemicals and is available from suppliers such as Alpha Amino, which offers Bacteriostatic Water in 10ml vials.
Handling and Storage of Bacteriostatic Water
To use a Bacteriostatic Water vial multiple times, it is essential to follow proper handling and storage procedures to maintain sterility. This includes using aseptic technique when drawing water from the vial, such as wiping the stopper with a sterile wipe and allowing the vial to stand upright for a few minutes before use. The vial should be stored in a cool, dry place, away from direct sunlight and heat sources, and should be discarded if it becomes contaminated or if the sterility is compromised. The USP General Chapters: Water for Pharmaceutical Purposes <1231> provides guidelines for the handling and storage of water for pharmaceutical purposes, including bacteriostatic water.
Comparison of Bacteriostatic Water Vial Types
There are different types of Bacteriostatic Water vials available, including single-dose and multiple-dose vials. The main difference between these types of vials is the amount of water they contain and the number of uses they are designed for. The following table compares the characteristics of single-dose and multiple-dose vials:
| Type of Vial |
Volume |
Number of Uses |
| Single-Dose Vial |
1-2ml |
1 |
| Multiple-Dose Vial |
10ml |
20-30 |
Multiple-dose vials are more commonly used in laboratory settings where larger volumes of water are needed, and are often more cost-effective than single-dose vials.
Precautions and Considerations
When using a Bacteriostatic Water vial multiple times, there are several precautions and considerations to keep in mind. These include using the vial only for its intended purpose, following proper handling and storage procedures, and discarding the vial if it becomes contaminated or if the sterility is compromised. It is also essential to use the vial within a reasonable timeframe, as the preservative may break down over time, reducing its effectiveness. The USP General Chapters: Antimicrobial Effectiveness <51> provides guidelines for the testing of antimicrobial preservatives, including those used in bacteriostatic water.
Research Supplies and Bacteriostatic Water
Bacteriostatic Water is a critical component of many laboratory research protocols, and is often used in conjunction with other research supplies, such as laboratory research chemicals. Alpha Amino offers a range of research supplies, including Bacteriostatic Water, to support laboratory research and development.
Frequently asked questions
What is the shelf life of a Bacteriostatic Water vial?
The shelf life of a Bacteriostatic Water vial depends on the manufacturer and the storage conditions, but is typically 2-3 years from the date of manufacture. It is essential to check the expiration date on the vial before use and to discard the vial if it is past its expiration date. The USP General Chapters: Water for Pharmaceutical Purposes <1231> provides guidelines for the storage and handling of water for pharmaceutical purposes, including bacteriostatic water.
Can a Bacteriostatic Water vial be used for human or veterinary use?
No, Bacteriostatic Water vials are intended for laboratory use only and are not intended for human or veterinary use. They are designed to be used as a diluent for laboratory research chemicals and should not be used for any other purpose. The USP General Chapters: Sterility <71> and Antimicrobial Effectiveness <51> provide guidelines for the handling and use of bacteriostatic water in laboratory settings.
How should a Bacteriostatic Water vial be stored?
A Bacteriostatic Water vial should be stored in a cool, dry place, away from direct sunlight and heat sources. The vial should be kept upright and should be discarded if it becomes contaminated or if the sterility is compromised. The USP General Chapters: Water for Pharmaceutical Purposes <1231> provides guidelines for the storage and handling of water for pharmaceutical purposes, including bacteriostatic water.
What is the concentration of benzyl alcohol in Bacteriostatic Water?
The concentration of benzyl alcohol in Bacteriostatic Water is typically ~0.9%. This preservative helps to prevent the growth of bacteria and other microorganisms in the water, making it ideal for use in laboratory settings where sterility is critical.
Can a Bacteriostatic Water vial be used for multiple research protocols?
Yes, a Bacteriostatic Water vial can be used for multiple research protocols, as long as it is handled and stored properly and the sterility is maintained. The vial should be used only for its intended purpose and should be discarded if it becomes contaminated or if the sterility is compromised.
Alpha Amino products are sold strictly for laboratory and research use only and are not intended for human or veterinary use, diagnosis, treatment, or consumption.
