Spectrophotometer, also called spectrometer (spectrometer), is the light of the composition complex, is decomposed into spectral lines of scientific instruments. Measuring range generally includes wavelength range of 380 ~ 780 nm visible light region and wavelength in the range of 200 ~ 380 nm uv light area. The different light source has its characteristic of the emission spectrum, thus can adopt different light as the light source of the instrument. Tungsten light emission spectrum: tungsten light source by the spectra of the 380 ~ 780 nm wavelength light through a prism refraction, can be obtained by red, orange, yellow, green, blue, indigo, and purple of continuous chromatography; The chromatography can serve as a light in the visible light spectrophotometer.
