Spectrophotometers general

The spectrophotometer is an optical instrument for measuring light intensity relative to wavelength. By illuminating the measurement surface across the spectrum from ultraviolet to infrared (360 to 780nm) of visible light, reflectance values are determined. Based on the measurement geometry, a spectrophotometer measures either the amount of light reflected from an object or the amount of light absorbed by the object. Spectrophotometers can measure almost any sample: Liquids, plastics, paper, metal and fabrics, paints, screens, etc. The measurement of the absorbed light quantity (transmitted light) is mainly used in analytical (bio)chemistry, and the measurement of the reflected light quantity has a wide range of applications in color management, the textile industry, printing, and paints and dyes.