
How to Read a Peptide Certificate of Analysis: HPLC Purity, Mass Confirmation, and Counterion Content
A Certificate of Analysis is the single most important document a research-peptide supplier provides. This explainer breaks down how to interpret reversed-phase HPLC purity, ESI-MS identity confirmation, counterion and net-peptide content, and why lot-specific documentation is non-negotiable for rigorous laboratory work.





















