How Our Batches Are Tested: Reading and Verifying a COA
Where Peptide Stock's lot-specific test reports come from, how to match your vial to its report, and how to read HPLC purity and identity results.
Laboratory notes
Batch testing, documentation, storage and handling.
24 October 2026
24 October 2026
Research Use Only: What It Means and Why We Enforce It
What "Research Use Only" means for the peptides we supply, why it matters under UK regulation, and how we apply it to orders and enquiries.
8 September 2026
How to Read a Peptide Certificate of Analysis (COA): HPLC, Mass Spec and What Purity Really Means
A practical guide to reading peptide COAs: what HPLC purity and mass spectrometry actually measure, what they leave out, and the red flags that separate a real…