GB/T 13452.3-1992 "Paints and varnishes - Determination of hiding power - Part 1: Kubelka-Munk method for white and light Paints"

Standard GBT 13452.3-1992 "Determination of Paints and varnish hiding power, Part 1, Kubelka-Munk method for white and light Paints" specifies the use of Kubelka-Munk method to determine the hiding power of white and light Paints. For paint films with Y values greater than 70, the spreading rate when the contrast ratio reaches 98% is assessed based on the Optical inspection properties of the paint film.

This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.