Reference library
Research guides
Analytical reference material, free and without registration. Written because the questions below come up constantly and the answers are scattered across supplier FAQs, forum threads, and method papers.
How to Read a Peptide Certificate of Analysis
What each assay measures, which figures matter, and how to spot a certificate that is not what it appears to be.
HPLC Purity vs. Mass Spectrometry Identity: Why You Need Both
The two analytical methods answer different questions, and a certificate with only one leaves a gap.
Peptide Storage and Stability: A Laboratory Reference
Temperature, light, moisture, and freeze-thaw — what actually degrades peptide material and what the data shows.
Research Use Only: What the Designation Actually Means
The regulatory basis for RUO labelling, what it permits, and what it does not.