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.
Archive
Tag: Peptide Quality Control
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.
How to Store Lyophilized Research Peptides for Maximum Stability
Lyophilized peptides last longest when stored cold, dark and dry. Learn practical storage, handling and stability tips for research peptides — no dosing guidance.
How to Evaluate a Research-Peptide Supplier in Canada: Green Flags & Red Flags
Choosing a Canadian research-peptide supplier? Use this checklist of green flags and red flags — batch COAs, third-party testing, transparency and honest language.
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.