Optical Emission Spectroscopy 

OESOptical Emission Spectroscopy is an optical method of measuring elements within a range of different materials. It does not have the limitation of X-ray fluorescence (XRF), in that it can measure elements that are lighter than magnesium. This includes carbon, which allows OES to be used to identify and grade steel alloys.

Optical emission spectroscopy generates the emission spectra from the sample by the application of a spark. The application of OES requires preparation of the sample and subsequent restoration of the surface to remove the burn from the spark.

For more information on optical emission spectroscopy, see:

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