Certificates of Analysis (COAs) can look intimidating if you’re new to sourcing research
peptides. This guide breaks down exactly what each line item means and how our Standard, High
Purity, and Ultra-Pure Research grades differ.
Key COA Fields
- Lot/Batch Number — ties the document to your specific vial
- HPLC Purity (%) — quantifies peptide purity
- MS Identity Confirmation — verifies molecular weight matches spec
Comparing Our Grades
Standard Grade is HPLC-verified at ≥98% purity. High Purity Grade raises that bar to ≥99%.
Ultra-Pure Research Grade adds mass spectrometry confirmation on top of a ≥99.5% HPLC purity
threshold, for research contexts where analytical certainty matters most.
Research use disclaimer: All products and information on this site are intended strictly for laboratory and in-vitro research purposes. Nothing on this site constitutes medical advice, and no product is intended for human or animal consumption, diagnosis, treatment, cure, or prevention of any disease.