本文件规定了用于确定三刺激值Y和Y10大于25的白色或浅色涂料涂层施加到黑白图表或无色透明箔上的遮盖力的方法。在后一种情况下，在黑色和白色面板上测量三刺激值Y和Y10。随后，根据这些三刺激值计算隐藏能力。 本文件还规定了一种简单的方法，用于计算挥发物含量低、蒸发速度低的涂料的铺展速率，例如EN 13300中规定的内墙和天花板涂料。

This document specifies methods for determining the hiding power given by paint coats of white or light colours of tristimulus values Y and Y₁₀ greater than 25, applied to a black and white chart, or to a colourless transparent foil. In the latter case the tristimulus values Y and Y₁₀ are measured over black and white panels. Subsequently, the hiding power is calculated from these tristimulus values. This document also specifies a simple method for calculating the spreading rate for paints with a volatile matter content with low evaporation speed, e.g. coatings for interior walls and ceilings as specified in EN 13300.