The Micromass-ZQ 2000 is a robust single quadrupole mass spectrometer, offering characteristic performance for laboratories that require nominal mass resolution for mass confirmation applications.  This system has a mass range （amu） up to 2000 daltons.  Easily qualify and quantify small molecules in a flash with the highly sensitive system.  Both inlet probes are quickly and easily interchangeable without breaking vacuum.  Flow rates allowed are 5-1000 µl/min （ESI） and 200-2000 µl/min （APCI）.