Certificates of Analysis: A Guide to Evaluating Research Peptide Quality Before Buying
Learn critical methods to verify the quality and purity of research peptides before purchasing. Ensure optimal results and safety in your research.
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Tag: Research Peptide Quality
How to Read a Certificate of Analysis (COA) for Research Peptides
Learn to read a peptide COA in minutes: purity (HPLC), identity (MS), net peptide content, counter-ion, water content and batch number — and what good looks like.
HPLC vs. Mass Spectrometry: What Each Peptide Test Actually Tells You
HPLC measures peptide purity; mass spectrometry confirms identity. Here's how each method works, why you need both, and how to read the results on a COA.
What ≥99% Peptide Purity Really Means
≥99% purity sounds simple, but net peptide content, counter-ions and water change what's actually in the vial. Here's how to interpret purity claims correctly.
Why Third-Party Lab Testing Matters (and How to Verify It)
Independent lab testing makes peptide quality credible. Learn why third-party HPLC/MS beats in-house claims and how to verify a COA is genuine.