標準號：BS EN ISO 2814-2007
中文標準名稱：涂料和清漆.同類型顏色涂料對比率(遮蓋力)
英文標準名稱：Paints and varnishes - Comparison of contrast ratio (hiding power) of paints of the same type and colour
標準類型：G50
發布日期：2007/1/31 12:00:00
實施日期：2007/1/31 12:00:00
中國標準分類號：G50
國際標準分類號：87.040
適用范圍：Specifies the standard method to be used in comparing the contrast ratios given by paint films of white or ligth colours, of refelctance factor greater than 40 %, dried at normal air temperature and applied at approximately equal wet film thickness to black and white substrates. The wet film thickness selected, approximately 50 um, corresponds to a spreading rate of approximately 20 m2/l. Because different operators using the same film coating device obtain films differing in thickness the method is not satisfactory as an absolute method for the determination of hiding power.