A compact, double-beam UV-VIS spectrophotometer wrapped in a sleek form. The UV-1800 uses the Czerny-Turner mounting for its monochromator, and boasts the highest resolution in its class*, a bright optical system, and a compact design. Available as either a stand-alone instrument or a PC-controlled instrument, the UV-1800 is USB-memory ready, which enables users to save measurement data to highly versatile USB memory, and perform data analysis and printing using a PC. The UV-1800 also conforms to the specifications demanded by the Japanese Pharmacopoeia in relation to wavelength accuracy and photometric accuracy. Additionally, hardware validation based on the Japanese Pharmacopoeia can be performed using validation software that is incorporated as a standard feature and an optical filter for wavelength calibration that is calibrated at a bandwidth of 1 nm.