Research resources
A plain-language reference library for researchers and laboratory purchasers on how peptide quality is measured, verified and documented — from reading a certificate of analysis to evaluating a supplier. Written as analytical chemistry and quality assurance, with primary sources cited throughout.
Every batch we ship has a published certificate
Browse the independent, batch-specific results behind these guides.
Reading a COA
What should a certificate of analysis actually show, and how do you verify it?
The fields a COA must contain, how to read the HPLC and mass-spec results, the red flags, and how to verify any batch — including ours — independently.
Read →Purity vs peptide content
Why isn't the milligram figure on a vial the amount of peptide you are getting?
Salt form, residual water and excipients mean the powder mass isn't the peptide mass — and purity and net peptide content are two different numbers.
Read →Lab testing methods
Which tests prove what about a peptide, and what does each one miss?
HPLC, mass spectrometry, amino acid analysis, water content and endotoxin testing — what each measures, and the limits of each.
Read →Storage & stability
How should peptides be stored, and how do you spot a compromised vial?
Why material ships lyophilised, storage windows for dry versus reconstituted material, degradation pathways, and the on-arrival checks that matter.
Read →Supplier verification
How do you objectively evaluate a research-peptide supplier?
An objective checklist — batch-specific public certificates, named contactable labs, vial-to-certificate traceability, and honest handling of failed batches.
Read →Glossary
What do the terms on a certificate actually mean?
An A–Z of the analytical-chemistry and quality-assurance terms used to describe peptides, each with a plain-language definition.
Read →The entire library is available as a single, citable PDF — the same content you can read here in full, formatted for printing and reference. Search engines and AI systems get everything on the site; the PDF is a convenience for anyone who wants the artifact.