1. Obtain metrological certification: The instrument has built-in sensors and information processing chips; it ensures the accurate transmission of optical signals and the stability of electrical signals, and safeguards the accuracy and repeatability of the instrument. The display accuracy is 0.01, and the repeatability accuracy △E standard deviation value is 0.08 2. L*a*b, L*c*h, Yxy and other multi-color space color value display: As a general-purpose measuring instrument, the colorimeter has a built-in program for converting various color display indicators, so that the instrument can be directly applied to various color measurement fields without the need for color measurement personnel to manually convert measurement data, which greatly improves work efficiency 3. It can realize yellow and whiteness testing: Whiteness value: Hunter whiteness, Ganz whiteness; Yellowness value: YI 4. Ergonomic design: The waist of the instrument conforms to the curvature of the human palm and can be used for testing; the leather feel design increases friction and prevents fingers from slipping 5. It can test at multiple points to get the average value and control the color of objects with uneven colors