Introduction
Bacteriostatic water is a valuable solution for research labs, thanks to its extended shelf life and sterile formulation. However, to maintain its integrity, it must be stored and handled properly. Incorrect storage can compromise sterility, shorten usability, or risk contamination. In this blog you will learn how to Store Bacteriostatic Water Safely.
This article covers the key do’s and don’ts of bacteriostatic water storage, so your lab can rely on safe and consistent results.
(Note: All Herbilabs products are supplied strictly for Research Use Only (RUO) — not for human or veterinary use.)
Ideal Storage Conditions
- Temperature: Store at controlled room temperature (15–30°C). Avoid freezing.
- Light: Keep vials away from direct sunlight or strong artificial light.
- Humidity: Store in a dry environment to reduce risk of packaging compromise.
- Position: Always keep vials upright to prevent leaks.
After Opening: Shelf Life & Handling
Unlike sterile water, bacteriostatic water contains 0.9% benzyl alcohol, which helps inhibit bacterial growth. This makes it suitable for multi-use access when aseptic technique is followed.
- Shelf Life Once Opened: Can be used multiple times, but should be discarded if the solution becomes cloudy or after 28 days (per common lab practice).
- Aseptic Withdrawal: Always use sterile syringes or pipettes. Avoid touching stoppers with hands or unsterile tools.
- Resealing: Ensure the butyl stopper and flip-off cap are properly closed after each use.
Common Mistakes to Avoid to Store Bacteriostatic Water Safely
- Leaving vials unsealed – even a short time uncovered can lead to contamination.
- Storing near heat sources – accelerates chemical degradation.
- Using non-sterile equipment – undermines the bacteriostatic protection.
- Keeping past expiry – discard vials after expiration or noticeable change.
FAQ
How long can bacteriostatic water last unopened?
Stored correctly, it remains stable until the manufacturer’s printed expiry date.
Can I refrigerate bacteriostatic water?
Not required under normal lab conditions, but refrigeration is not harmful if temperature remains stable and above freezing.
What if my solution becomes cloudy?
Discard immediately — cloudiness indicates contamination or degradation.
Compliance Reminder
Bacteriostatic water from Herbilabs is supplied strictly for Research Use Only (RUO). It is not for human or veterinary injection, treatment, or consumption.
Conclusion
Correct storage and careful handling to store bacteriostatic water safely ensure your bacteriostatic water remains reliable for lab protocols. By protecting it from contamination and environmental stress, you maximize both safety and value.
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