How is Peptide Purity Achieved and Verified? At puregenpeptide.com, we provide peptides that exceed 99% purity. Using state-of-the-art solution and solid phase peptide synthetic technology, Pure Gen Peptide is able to offer the finest quality peptides and proteins fit for any research study or application. Peptide purity is achieved and verified through uncompromising manufacturing and production processes, quality control measures, and the implementation of both high-performance liquid chromatography and mass spectrometry analysis. HPLC and Mass Spectrometry High performance liquid chromatography, or HPLC, is a scientific technique used to separate, identify, and quantify each component in a mixture. It is a superior process that allows highly accurate peptide testing to be accomplished. Mass spectrometry (MS) is a technique used to measure masses within a sample by ionizing chemical species and sorting the ions based on their mass to charge ratio. The results are plotted with the ion signal as a function