Product Description

The instrument accord with the relevant provisions in the standards of GB/T ***8、GB/T ***3、GB/T ***4、GB/T ***5、 ISO ***0, etc. It is applied to measure whiteness, yellowness, color and color difference of objects, and opacity, transparency, light scattering coefficient, light absorption coefficient and ink absorption value of paper. Specifications and parameters 1、Simulate D*5 illuminant to illuminate. Adopt CIE ***4 supplementary standard colorimetric system and color difference formula of CIE ***6(L*a*b) color space. 2、Adopt d/o illuminating*-geometrical viewing conditions. Diameter of the diffuse globe is **0mm and diameter of the testing hole is *5mm. 3、Repeatability of test：δ（Y*0）<0.1，δ（x*0、y*0）<0.**1； 4、Accuracy：△Y*0<1.0；△x*0(Y*0)<0.*1； 5、Sample size：testing plane≥￠*0mm, thickness≤*0mm。