mass spectrometer

Mass spectrometry (previously called mass spectroscopy () or informally, "mass-spec" and MS) is an analytical technique used to measure the mass-to-charge ratio of ions. It is most generally used to find the composition of a physical sample by generating a mass spectrum representing the masses of sample components. The mass spectrum is measured by a mass spectrometer.
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Mass spectrometry, n a method of identifying and analyzing substances by fragmenting substances with a bombardment of high-energy electrons. [more]Mass spectrometer - Community and Resources

Noun
1. spectroscope for obtaining a mass spectrum by deflecting ions into a thin slit and measuring the ion current with an electrometer
(synonym) spectrometer
(hypernym) spectroscope, prism spectroscope
(hyponym) mass spectrograph

Instrument that identifies the molecular composition and concentrations of various chemicals in water and soil samples.

An instrument that measures the masses and relative abundances of a sample that has been vaporized and ionized.