Liquid Chromatography-mass spectrometry (LC-MS) is the most powerful technique available from the mass spectrometer center.   These experiments are preformed on the Thermo LTQ-FTMS and allowed the measurement of accurate mass during the Chromatography analysis.  In addition, MS/MS and detection on a diode array can be obtained simultaneous.  Because of the many possiblities available with the LC/MS, it is best to discuss your samples and what information you need with the Director..