The Angstrom Advanced Model Gold 54 UV/VIS Scanning Spectrophotometer is a benchtop device for measuring absorbance across ultraviolet and visible wavelengths. It features a 4 digit LED display, long life lamps including deuterium and halogen-tungsten, an RS232 serial interface, precise diffraction grating monochromator optics, and software for processing both qualitative and quantitative spectral data.