Guides

Research Guides

• Understanding a Certificate of Analysis: What HPLC and Mass Spec Results Mean

  A plain-language breakdown of the test methods behind a real Certificate of Analysis — what HPLC purity, mass spectrometry identity, and endotoxin results actually tell you.

• How to Spot a Fake Peptide Supplier (And Verify a COA Yourself)

  A practical guide to verifying third-party Certificates of Analysis and spotting the red flags of diluted or counterfeit research peptides — before you buy.