NR145 is a model of colorimeter with powerful functions, It is configured with multiple color space systems and color difference formulas, all of which have endowed NR145 with powerful functions to meet the requests of all kinds of color measurements. Its friendly interface makes operation very simple. And once connected with PC via the software CQCS3 whose complete independent intellectual property right , more powerful extension functions will be at hand, like color difference analysis, color difference cumulative analysis, chromaticity index, color sample database management and simulating object color, etc.