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.
| Status | Active |
|---|---|
| CCS | G50 | ICS | 87.040 |
| Release Date | 1992-04-28 00:00:00 | Implementation Date | 1993-03-01 00:00:00 |