Optical emission spectroscopy (OES) is an analytical technique that determines metal composition by exciting the sample with a spark discharge and measuring the resulting emission spectrum.
Hitachi High‑Tech Analysis uses spectrometers equipped with CCD or CMOS sensors to enable simultaneous multi‑element analysis in a compact form. This design allows the instruments to be used across a wide range of applications, from quality control to research in steel, castings, and both ferrous and non‑ferrous metal analysis.