The ColorQuest® XT is a self-contained transmission spectrophotometer. It is designed to measure the transmitted color of transparent materials. Products such as resins, solvents and films can be measured as well as transparent plastic sheets and preforms. It includes all widely used color scales and indices such as APHA/PtCo/Hazen and yellowness index. The system uses a large LCD display and can be read in any lighting environment. The display has a touch screen that facilitates ease of operation.