This category encompasses specialized equipment for quantitative and qualitative analysis of elemental composition in materials and products. It includes X-ray fluorescence analyzers (XRF), atomic absorption spectrophotometers (AAS), ICP optical emission spectrometers, ICP mass spectrometers, carbon-sulfur analyzers, oxygen-nitrogen analyzers, and similar instruments. These devices are essential for material evaluation and quality assurance in manufacturing, including component management of metallic materials, alloy quality inspection, impurity analysis, and heavy metal measurement in environmental samples. Unlike spectrophotometers and chromatography systems, this category specifically targets instruments specialized in elemental-level composition analysis.