This standard is applicable to the determination of the hiding power of paint, that is, the minimum amount of paint used to evenly paint the paint on the surface of the object so that the base color no longer appears, expressed in grams/m 2.
GB/T 1726-1979 history
1979GB/T 1726-1979 Methods of test for hiding power of paints
GB/T 1726-1979 Methods of test for hiding power of paints was changed to GB/T 23981.2-2023 Paints and varnishes - Determination of hiding power - Part 2: Black and white grid method.