Double-beam UV-Visible Spectrophotometer is adopted with microcomputer technology and electronic control system, features holographic grating with 1200 lines/mm. Equipped with solid silicone photodiode detector and xenon lamp as light source, have 190 to 1100 nm of wavelength range. Designed with 7-inch TFT screen with sensitive buttons and large sample chamber, it also supports USB storage and different data formats.