HPLC Journals (High Performance Liquid chromatography Journals) has been used for medical (e.g. sleuthing cholecarciferol levels in blood serum), legal (e.g. sleuthing performance improvement medicine in urine), analysis (e.g. separating the parts of a fancy biological sample, or of comparable artificial chemicals from every other), and producing (e.g. throughout the assembly method of pharmaceutical and biological products) functions. Chromatography natural method will be delineating as a mass transfer process involving surface assimilation.