In biochemical synthesis, purity isn't merely a percentage—it is the difference between verifiable research findings and false signals in receptor binding assays across European laboratories. Read more about ZizPeptide Europe's analytical quality standards.
What Does Reverse-Phase HPLC Reveal?
Reverse-Phase High-Performance Liquid Chromatography (RP-HPLC) separates the sample mixture under high pressure through a stationary phase column. By measuring retention times and UV absorption at 214nm and 280nm, HPLC quantifies the exact percentage of the target peptide relative to deletion sequences or stereoisomers. Every batch across all 14 research peptides in our catalog meets a strict ≥99.0% HPLC purity benchmark.
Mass Spectrometry (ESI-MS) for Sequence Identity
While HPLC confirms quantitative purity, Electrospray Ionization Mass Spectrometry (ESI-MS) confirms molecular identity for complex sequences such as Retatrutide 20mg, KLOW 80mg, and Epitalon 50mg by determining the exact molecular weight (m/z ratio) following Fmoc Solid-Phase Synthesis.