Research Guides
How to Read a Certificate of Analysis (COA) for Peptides
Guide to reading certificates of analysis: HPLC purity, mass spectrometry, endotoxin content, and what to look for when evaluating peptide quality.
12 min read
Articles tagged "quality"
Buying & Regulation
How to Choose a Reliable Peptide Supplier: A 10-Point Checklist
Essential criteria for choosing a research peptide supplier: purity, certifications, transparency, shipping, and customer service. Complete checklist.
12 min read
Advanced Science
HPLC and Peptide Purity: Why 99%+ Makes the Difference
Everything about HPLC chromatography applied to peptides: how it works, how to read the results, why purity matters, and the difference between 95%, 98%, and 99%+.
15 min read