Taking advantage of the characteristics of the selected pigments and using the RAL K7 Color Chart commonly used in the industry as the color matching standard, the conventional color matching references are shown in Table 2.

Table 2 Reference examples of color matching
The test proves that the standard method has a good discrimination for the TVOC release of different paints, can be used to judge the TVOC release performance of interior wall paint, and has a good reference value for the establishment of TVOC release standards for interior wall paint in my country.
For more details, please refer to the full text of "Design and Establishment of Color System of High-performance Industrial Solid Color Paint" (Dai Hongyan)