The most ubiquitous type of spectrometer used for research are optical spectrometers and when someone simply says ‘spectrometer’, without an additional qualifier, they are usually referring to an optical spectrometer and this diverse family of spectrometers is the focus of this article. Right: Mass spectrometer (Scion Instruments GC-MS spectrometer).
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Left: Optical spectrometer (Edinburgh Instruments FS5 spectrofluorometer).Ĭentre: NMR spectrometer (Agilent 800 MHz NMR spectrometer). This could be a mass-to-charge ratio spectrum in the case of a mass spectrometer, the variation of nuclear resonant frequencies in an NMR spectrometer or the change in the absorption and emission of light with wavelength in an optical spectrometer.įigure 1: The three most common types of spectrometers found in research labs around the world. In the broadest sense a spectrometer is any instrument that is used to measure the variation of a physical characteristic over a given range i.e.
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