The ColorQuest® Haze is an on-line spectrophotometer that continuously measures the transmitted color of film and sheet that is clear or hazy. Color, yellowness and transmission haze can be measured. The system consists of a sensor module and a control/display module with a built-in touch-screen display. All widely used color scales and illuminants are programmed into the system. Data can be output to a LIMS or network or in analog form for alarms and control systems.