A practical guide to peptide purity testing — how reverse-phase HPLC and mass spectrometry work, how to read a certificate of analysis, and which numbers actually matter.
What to verify before you buy peptides online — third-party testing, batch traceability, cold-chain shipping, documentation and compliance signals that separate real suppliers from resellers.
Temperature, diluent choice, aliquoting and freeze-thaw control — a laboratory guide to storing and reconstituting lyophilized research peptides while preserving assay integrity.
A side-by-side comparison of BPC-157 and TB-500 as research reference compounds — sequence origin, molecular characteristics, stability, analytical handling and documentation requirements.