... diffuse reflectance factor Rx, Ry, Rz IntroductionZB-A Colorimeter lab equipment is the professional instrument to test the object of the ... interface ,can communicate with the computer software 7.Has power-off protection, Correct data would not lose8.can store ... 9 reference samples ( sample or data)Technical parameters1.Power :220V±10%, 50HZ2.Indication accuracy: chromaticity coordinate is 0 ...