Buying & Verification
How to vet suppliers, read a COA, and verify purity. Drawn from the same expert knowledge base that powers Raphael.
- QA-03
Where should I buy research peptides?
Buy from a supplier that provides ≥99% HPLC purity, a per-batch Certificate of Analysis, independent third-party verification, GMP-aligned manufacturing, and mechanism-first product education — never from anonymous resellers without batch documentation.
- QA-04
How do I read a Certificate of Analysis (COA) for a research peptide?
A COA is the lab report for a specific batch. Verify the batch number matches your vial, check HPLC purity is ≥99%, confirm mass-spec molecular weight matches the target sequence, and confirm the report was issued by an independent accredited laboratory.
- QA-05
What does '99% HPLC purity' actually mean?
It means that High-Performance Liquid Chromatography analysis shows ≥99% of the material is the intended peptide sequence, with less than 1% impurities — the pharmaceutical-grade benchmark for research peptides.
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