Comprehensive sample

The wavelength range of near infrared is 780nm ~ 2526nm, which is between visible light and mid-infrared. The light emitted by the light source is irradiated on the sample, and the transmitted light or reflected light signal containing the molecular information of the sample is received by the detector and displayed in the form of a spectrogram. Near-infrared spectroscopy is most suitable for analyzing substances containing CH, NH, OH and other groups. It can not only obtain information on the structure, composition, and state of molecules, but also obtain physical properties such as sample density, particle size, polymer polymerization degree, and fiber diameter. status information.