A portable metal analyzer is a spectral analysis instrument based on XRF (X-Ray Fluorescence) technology. It is mainly composed of detectors, CPU, and memory. Due to its portability and accuracy, it plays a significant role in applications such as alloys, ores, the environment, and consumer products.

Handheld spectrometers require high resolution and signal-to-noise ratio, superior intensity and wavelength accuracy, strong resistance to external interference, and excellent instrument stability. The software of the instrument must be capable of performing complex mathematical calculations such as derivatives and deconvolution, calculating spectral similarity, pattern recognition analysis, supporting multivariate calibration analysis, and allowing users to create and search their own spectral libraries.