Positive material identification is used to analyze and identify metals or their alloy composition for quality and process control. Optical Emission Spectrometry (OES) offers by far the most complete analysis and is therefore the most established technology on the market. Not only the main alloying elements can be determined by OES, but also trace elements with detection limits in the ppm range. OES is the first choice whenever elements with low atomic numbers such as C, P, S, B, Li, Be, Ca, Si, Mg, Al are to be measured and fast, precise and simultaneous determination of nitrogen in duplex is required. The innovative and reliable OES metal analyzer ferro.lyte® is optimized for fast on-site analysis. The analytical quality of ferro.lyte® corresponds to that of a stationary spectrometer - with maximum mobility at the same time.