Invented a half-century ago by Nobel laureate Wolfgang Paul, the quadrupole mass filter has become an integral part of some of the most sophisticated mass spectrometers. Consisting of four parallel ...

TThe expression CMS is a single quadrupole mass spectrometer, equipped with ESI and APCI probes, switchable with minimal effort. The instrument has a mass range of m/z 10 to m/z 1,200, and a ...