Features: 1. The mon℃hromator with a holographic flashing grating is used. It has the advantage of high wavelength precision, good mon℃hromaticity and low stray light. 2. Automatic switching of tungsten halogen lamp and deuterium lamp. 3. A sample compartment for 0.5cm-5cm cells. 4. Computer control system, precise automatic T/A changeover. 5. Automatic zero and full scale adjustment. 6. Direct concentration read-out and concentration factor setting function. 7. Equipped with RS232 port. Printer can be connected and data can be sent to PC by special software. Specifications: