microprocessor uv-vis double beam spectrophotometer

The Microprocessor UV“VIS Double Beam Spectrophotometer LI-2802 R is a high-precision analytical instrument used for measuring the absorbance and transmittance of samples in the ultraviolet and visible regions. It operates over a wavelength range of about 190“1100 nm and uses a double beam optical system that splits light into sample and reference beams, ensuring greater accuracy and stability by compensating for fluctuations in light intensity. The instrument is controlled by a built-in microprocessor, which enables automatic wavelength selection, data processing, and multiple measurement modes such as absorbance, transmittance, and concentration. It typically features a deuterium lamp for UV and a tungsten lamp for visible light, a silicon photodiode detector, and a multi-cell sample holder. With high wavelength and photometric accuracy, along with options like temperature control and data output interfaces, it is widely used in pharmaceutical analysis, environmental testing, and research laboratories.