S-OES spectrometers also called spark spectrometers employ an optical method of emission spectrometry with spark excitation. They are designed for accurate analysis multi-elemental metal alloys and their precise identification. Thanks to calibration libraries dedicated to specific groups of alloys measurements are much more accurate. Most calibration database includes various types of steel such as carbon steel, low-alloy steels, structural, stainless steel and others as well as other metals alloys: aluminum alloys, iron, bronze, brass and many other matched for the required application.
S-OES spectrometers in arc excitation mode perform semi-quantitative or only identification analysis, in spark excitation mode full quantitative analysis, including the study of carbon content in the sample.