BS 3900-D4(1974) : 1974被替代
METHODS OF TEST FOR PAINTS - PART D4: COMPARISON OF CONTRAST RATIO (HIDING POWER) OF PAINTS OF THE SAME TYPE AND COLOUR
出版：British Standards Institution
专家解读视频
基本信息
标准编号： BS 3900-D4(1974) : 1974
发布时间：1974/1/1 0:00:00
标准类别：Standard
出版单位：British Standards Institution
标准页数：8
标准简介
Defines the standard method to be used in comparing the contrast ratios given by paint films of white or light colours of reflectance factor greater than 40 % and applied at approximately equal wet film thickness to black and white substrates.
本标准替代的旧标准
