This standard specifies methods for determining quantitative colorimetric values for small color differences between coatings.
JIS K 5600-4-6:1999 history
2002JIS K 5600-4-6 ERRATUM 1:2002 Testing methods for paints -- Part 4: Visual characteristics of film -- Section 6: Colorimetry (Calculation of colour differences) (Erratum 1)
1999JIS K 5600-4-6:1999 Testing methods for paints -- Part 4: Visual characteristics of film -- Section 6: Colorimetry (Calculation of colour differences)