Field Notes — The Clarion Journal

Methodology notes, handling guides, and plain-language explainers — written for researchers by the team that releases the material.

• How to read a peptide Certificate of Analysis — April 12, 2026 · 9 min read
  A vial is only as trustworthy as the document that accompanies it. Here is what every line of a peptide COA actually means, and the red flags that should send a lot straight back.
• HPLC purity vs peptide content — what researchers should know — April 8, 2026 · 7 min read
  A vial that is "99% pure" can still be 30% salt and water. The difference between HPLC purity and net peptide content is the single most misunderstood number on a COA.
• Cold-chain not required? Peptide storage and stability basics — April 2, 2026 · 8 min read
  Lyophilized peptides are sturdier than most researchers assume in transit, and more fragile than most assume on the bench. A field guide to temperature, light, solvent, and shelf life.