#verification
5 pieces tagged verification.
Reading the paperworkWhy two laboratories get different numbers on the same lotAn HPLC purity figure is a method-dependent number. Where the differences between two reports on one lot come from, what measurement uncertainty is, and how to tell an expected gap from a real discrepancy.
Reading the paperworkSterility, metals and solvents: tests a purity certificate omitsWhat third-party tested actually covers. Purity, identity, sterility, endotoxin, elemental impurities, residual solvents and water are seven separate assays with seven separate standards, and a research certificate carries two or three of them.
Reading the paperworkSeven ways a certificate of analysis misleadsRepresentative certificates, lot numbers that match nothing, in-house tests dressed as independent, purity without identity, stale dates and purity without net content: each pattern, and what a good certificate shows instead.
Sourcing and provenanceHow to vet a peptide vendor with documents, not with forumsA document-by-document checklist for judging a research peptide supplier: lot-specific certificates, identity as well as purity, net peptide content, a named manufacturer and a verifiable laboratory.
Reading the paperworkHow to verify a peptide certificate of analysisHow to check that a peptide lab report is genuine, is about the lot in your hand, and comes from a lab whose accreditation you can confirm, with worked examples for TP-RTA-3, GHK-Cu and kisspeptin-10.
Nothing here is medical advice. Everything on this site is supplied for laboratory research use only.