Insights
Short reference articles with sources — the questions our buyers ask before they order.
Bacteriostatic Water vs Sterile Water: What Is the Difference?
Bacteriostatic water contains 0.9% benzyl alcohol and can be re-entered for up to 28 days; sterile water has no preservative and is single use. A side-by-side comparison for buyers.
Benzyl Alcohol in Bacteriostatic Water: Why 0.9%?
What benzyl alcohol does in bacteriostatic water, why the concentration is 0.9%, how it is tested (GC-FID), and the safety limits buyers should know.
How Long Does Bacteriostatic Water Last After Opening?
Opened bacteriostatic water is usually discarded 28 days after the first puncture. Unopened shelf life, storage temperature, signs a vial should be thrown out, and how to size purchases to avoid waste.
How to Read a Bacteriostatic Water COA (Certificate of Analysis)
A checklist for reading a bacteriostatic water COA: lot match, benzyl alcohol content, pH, sterility, endotoxins, particulates, fill volume — and red flags that suggest a template.
Buying Bacteriostatic Water in Bulk: A 10-Point Checklist
What to confirm before buying bacteriostatic water in bulk: the unit and price at your quantity, lot consistency, expiry window, documents, private label, packaging, freight and claims.