What we can document today: lot IDs, current COAs, and the rule against unverified quality claims.
Research Library
Laboratory notes on COAs, HPLC purity, lot documentation, and storage of lyophilized research materials.
How HPLC and LC-MS complement each other on a peptide certificate — purity versus mass identity.
Form-aware handling notes for lyophilized vials, aqueous pens, tablets, and laboratory solutions.
Why a peptide certificate is only meaningful when it matches the lot on the vial in front of you.
What HPLC purity means on a peptide COA, and what it does not prove about identity or research fitness.
A laboratory-oriented walkthrough of lot numbers, methods, and identity fields on a peptide Certificate of Analysis.