Direct reading spectrometers operate based on the optical emission spectrometry (OES) principle. When a sample (usually metal) is excited by an arc or spark discharge, it emits light at wavelengths characteristic of its elements. Detecting emission lines from excited atoms within seconds enables real-time alloy control before solidification or post-processing. The instrument is simple to operate, easy to maintain, the analytical accuracy fully meets the requirements of the laboratory, and can be used for a long time under. SPECTROMAXx direct-reading spectrometer is mainly used for material testing in foundries around the world, as well as inspections in the metal industry. The device SPECTROMAXx can identify all elements used in the metal industry, including metal analysis of carbon, phosphorus, sulfur and nitrogen. LS-1899 mobile spectrometer has the characteristics of high analysis accuracy, good stability, easy operation, flexible application, small size and light weight, which can complete the identification, sorting and composition analysis of alloy materials in the process of incoming materials and. The AES998 is a high-performance desktop Optical Emission Spectrometer (OES) engineered for fast, accurate elemental analysis of metallic alloys. Using spark excitation and a full-spectrum CCD detection system, it delivers efficient multi-element detection in both ferrous and non-ferrous materials.