Ion pair chromatography ipc functions to separate ionic analytes on reversed phase column. An ion pairing reagent is incorporated into modulate retention of the ionic analytelist of ion pairing reagents available in lab and bulk pack1, Butane sulphonic acid sodium salt anhydrous / monohydrate ar for hplc n, Cetyl n, N, N, Trimethyl ammonium bromide ar cetrimide 1, Decansulphonic acid sodium salt anhydrous / monohydrate ar for hplc dodecyltrimethylammonium bromide 1, Heptanesulphonic acid sodium salt anhydrous / monohydrate ar for hplc 1, Hexanesulphonic acid sodium salt anhydrous / monohydrate ar for hplc1, Nonanesulphonic acid sodium salt ar for hplc1, Octanesulphonic acid sodium salt anhydrous / monohydrate ar for hplc 1, Pentane sulphoic acid sodium salt anhydrous / monohydrate ar for hplc sodium lauryl sulphate ar for hplc tetrabutyl ammonium bromide artetrabutyl ammonium hydrogen sulphate ar for hplctetrabutyl ammonium iodide artetraethyl ammonium bromide artetraheptyl ammonium bromide artetramethyl ammonium iodide ar tetrapropyl ammonium bromide