The UltraScan® VIS measures the full range of human color perception. It measures both reflected and transmitted color and meets CIE and AATCC guidelines for accurate color measurement. The illumination source is calibrated and controlled in the ultraviolet region to accurately measure whitening agents. As recommended by the CIE, spectral data is measured, and tristimulus color calculations are performed, from 360 nm to 780 nm. UltraScan VIS features two sizes of sample measurement diameters. EasyMatch QC software is included.