本文件规定了确定白色或白色涂料涂层遮盖力的方法 三刺激值Y和Y10大于25的浅色，应用于黑白图表或无色透明箔上。在后一种情况下，在黑白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功率。 本文件还规定了一种简单的方法，用以计算涂料的摊铺率 a蒸发速度低的挥发性物质含量，即。 g、 内墙和天花板的涂层 EN 13300中规定。交叉引用:ISO 3233-3:2015ISO 1513ISO 3251ISO 2811（所有部分）EN 13300ISO 15528ISO/TR 22971ISO 5725-2ISO 11664-4:2008ISO 11664-2:2007ISO 4618:2014购买本文件时提供的所有现行修订均包含在购买本文件中。

This document specifies methods for determining the hiding power given by paint coats of white or light colours of tristimulus values Y and Y10greater than 25, applied to a black and white chart, or to a colourless transparent foil. In the latter case the tristimulus values Y and Y10are 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.Cross References:ISO 3233-3:2015ISO 1513ISO 3251ISO 2811 (all parts)EN 13300ISO 15528ISO/TR 22971ISO 5725-2ISO 11664-4:2008ISO 11664-2:2007ISO 4618:2014All current amendments available at time of purchase are included with the purchase of this document.