Quality & Testing
Purity you can verify.
Sterile-filtered, cleanroom-filled, and released with a Certificate of Analysis — batch after batch.
How every batch is made
Step 1
USP-grade base
Every batch starts from USP-grade water and benzyl alcohol, received with supplier documentation.
Step 2
0.22µm sterile filtration
The solution is sterile-filtered before filling to remove particulates and microorganisms.
Step 3
Cleanroom filling
Vials are filled and stoppered in a controlled cleanroom environment, then sealed with a tamper-evident cap.
Step 4
Batch testing
Each lot is tested and released with a Certificate of Analysis. Request yours any time.
Labels, packaging and product images shown are for demonstration purposes only. Actual labels and packaging may differ.
Specifications
- Composition
- Sterile water, 0.9% benzyl alcoholWhy benzyl alcohol? ›
- Filtration
- 0.22µm sterile filteredWhat USP-grade means ›
- Closure
- Butyl stopper, flip-off sealWhat a good vial looks like ›
- Storage
- Room temperature, away from lightShelf life & storage guide ›
- Testing
- COA per batchHow to read a COA ›
Request a Certificate of Analysis
Email support@bacwatersupplyusa.com with the lot number printed on your vial, or send us a message. Wholesale accounts receive a COA with every shipment automatically.
For laboratory and research use only. Not for human or veterinary use. Not intended to diagnose, treat, cure, or prevent any disease.
Go deeper
Standards, explained.
How to read a Certificate of Analysis (COA) for bacteriostatic water
What each part of a bacteriostatic water COA means: lot number, specs vs results, test methods, sterility, endotoxin and particulate tests, and red flags.
Read the guide ›What Does USP Mean on Bacteriostatic Water?
What USP means on a bacteriostatic water label, what the monograph covers, and how "USP-grade ingredients" differs from a product tested to it.
Read the guide ›Is Bacteriostatic Water Supposed to Be Clear?
Bacteriostatic water should be clear with no particles or color. What cloudiness or particles mean, how to inspect a vial, and when to quarantine it.
Read the guide ›What does benzyl alcohol do in bacteriostatic water?
Why bacteriostatic water contains 0.9% benzyl alcohol, how the preservative works, what it can't do, compatibility notes, the newborn warning and handling.
Read the guide ›
Ready to order? Shop Batch Reconstitution Solution · Wholesale accounts get a COA with every shipment