GCMS-QP2020 high-sensitivity gas chromatograph mass spectrometer features a proprietary multi-function ion source, patented high-speed scan control, and a turbomolecular pump (TMP). These features, along with databases and multiple sample introduction devices, enable custom configurations tailored to fit the needs of food laboratories. TMP’s heightened exhaust efficiency can improve performance of the instrument when operated using not only helium and hydrogen but also nitrogen. The pump’s differential exhaust system evacuates the ion source and quadrupole separately to help achieve optimal instrument conditions while using any of the carrier gases. Ion source technology can create a stable space for ion creation, prevent contamination due to source interactions, and offer the ability to switch ionization modes without venting the system. Shimadzu Scientific Instruments Inc., 800-477-1227, www.ssi.shimadzu.com.
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