Knowledge Hub

Guides on quality verification, reconstitution, and safe handling of research peptides. For laboratory research use only.

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Quality

How to Read a Peptide Certificate of Analysis: Purity, Mass, Fill, and Endotoxin

How to read peptide COA rows for HPLC purity, mass identity, fill, and endotoxin—keeping methods, units, and less-than qualifiers with each result.

Quality

How to Read Peptide Content Versus Purity on a COA

Purity is not peptide content. Read each COA row with its units, then match the SKU and batch. Missing results are not passes, and labels are not measurements.

Quality

Understanding a Certificate of Analysis (COA)

How to read a peptide COA: purity by HPLC, mass verification, and what a lot number tells you.

Quality

Why Third Party Tested Peptides Matter for Research

Independent HPLC purity testing and mass spec verify identity and purity—core peptide quality control for reproducible research results.

Quality

Endotoxin Testing for Research Peptides

Detailed guide to endotoxin testing, peptide sterility, and the LAL test for maintaining quality in research-grade peptides within laboratory environments.

Quality

How to Read a COA: Peptide Purity & Testing

Learn how to read a COA for research peptides, covering HPLC purity, mass spectrometry, endotoxin levels, and sterility results.