This standard specifies the general test method for comparing the colors of white, black, and colored pigments with the colors of comparative pigments agreed upon between the purchaser and the manufacturer in terms of dark color using a colorimeter.
JIS K 5101-2-2:2004 history
2004JIS K 5101-2-2:2004 Test methods for pigments -- Part 2: Comparison of colour -- Section 2: Colorimetric method