has proper occurrent part electrospray ionisation tandem mass spectrometry liquid chromatography-tandem mass spectrometry reversed-phase liquid chromatography-electrospray ionisation tandem mass spectrometry A method where the sample mixture is first separated by reverse-phase liquid chromatography before being ionised by forcing a solution (usually in an organic solvent) of it through a small heated capillary (at a flow rate of 1–10 uL min1) into an electric field to produce a very fine mist of charged droplets. The ions are then characterised according to mass-to-charge ratio and relative abundance by two mass spectrometers in series. RPLC-LC-ESI-MS2 reverse-phase liquid chromatography electrospray ionisation tandem mass spectrometry CHMO:0000738 reversed-phase liquid chromatography electrospray ionisation tandem mass spectroscopy RPLC-LC-ESI-MS/MS RPLC-LC-ESI-MS-MS reversed-phase liquid chromatography