ISO 6504-1 is an international standard on the determination of Coating hiding power in white and light colors using the Kubelka-Munk method. The standard specifies methods for determining Coating hiding power using the Kubelka-Munk method under specific conditions to ensure Coating mass and adaptability. The standard specifies experimental equipment, experimental procedures and data processing methods. Specifically, the standard requires Coating to be tested under specific conditions using a photometer or colorimeter, and then the Coating hiding power to be calculated. The standard also specifies requirements for accuracy and Reliability of the determination, as well as the manner in which the test results are reported. The standard applies to a wide range of white and light coloured coatings, including wall finish coatings, Wallpaper and paints.