Certificate of Analysis
Research Water
Batch B0526 · Tested February 18, 2026
✓ Third-Party Lab Tested
Independent laboratory analysis confirms the composition of this bacteriostatic water solution. Results apply only to this specific batch; for research use only.
Sample Summary
Identification and intake details for this tested batch.
Product
Research Water
Batch / Lot
B0526
Accession #
2602180016
Test Date
February 18, 2026
Appearance
Clear Liquid
Identity
Benzyl Alcohol
Solution Composition
HPLC with UV Detection Coupled with Mass Spectrometry
Benzyl Alcohol Content
0.78%
Identity (LC-MS)
Benzyl Alcohol
Appearance
Clear Liquid
Test Method
HPLC with UV Detection Coupled with Mass Spectrometry
What this test measures
Mass spectrometry confirms the identity of the preservative in solution and quantifies its concentration. Bacteriostatic water is sterile water preserved with benzyl alcohol, which inhibits microbial growth across repeated punctures of the vial.
Full Certificate PDF
Signed laboratory-issued PDF with chromatogram and mass confirmation plots.
Test History for Research Water
6 independent lab tests on file for this product.
0.98%
Batch B1726048
May 11, 2026 · Benzyl Alcohol
0.92%
Batch B1726048
May 5, 2026 · Benzyl Alcohol
Cleared
Batch B0526
Apr 8, 2026 · Endotoxin
Cleared
Batch B0526
Feb 20, 2026 · Endotoxin
Cleared
Batch B0526
Feb 18, 2026 · Endotoxin
0.78%
Batch B0526
Feb 18, 2026 · Benzyl Alcohol
Frequently Asked Questions
Quick references for what each test means.
What does this water certificate test for?
Bacteriostatic water is sterile water preserved with benzyl alcohol. This certificate confirms the preservative's identity by mass spectrometry and quantifies its concentration, verifying the solution is correctly formulated. Separate endotoxin certificates for the same lot test against USP <85> standards.
Are all my orders from this exact batch?
Not necessarily — batches are rotated as inventory moves. Check the batch code on your vial against the test history above to find the matching certificate. Every batch we sell has been independently tested.
Research Use Only
The peptides tested are intended for research use only and are not approved for human or veterinary use, diagnostic, therapeutic, or clinical applications. Results apply only to the specific sample provided and should be interpreted by qualified professionals within the scope of the intended research.