The G2445D 1100 Series LC/MSD Trap System is a benchtop mass spectrometer. It offers the sensitivity, selectivity, and depth of molecular information inherent in mass spectrometer in a rugged, reliable, easy-to-use benchtop system. The HPLC (1100 series) is interfaced to an ion trap mass analyzer (model G2445D SL). The LC is equipped with a vacuum degasser, quaternary pump, thermostatted auto sampler and UV-VIS diode array detector (wavelength range 190-900nm). The MS has Electrospray (ESI) and Atmospheric Pressure Ionization (APCI), which has an ion trap analyzer with mass range 50-2200 Da with adjustable scan speeds for normal, enhanced or maximum resolution and extended range 50-4000 Da with normal resolution. This product has scan, Multiple Ion Monitoring (MRM) and MS(n) modes with positive, negative and alternating polarity ion detection.