DIN EN ISO 12625-7-2014 薄纸和薄纸制品. 第7部分: 光学性能的测定. 带D65/10°颜色和亮度的测量(室外日光)(ISO 12625-7-2014); 德文版本EN ISO 12625-7-2014
Tissue paper and tissue products - Part 7: Determination of optical properties - Measurement of brightness and colour with D65/10° (outdoor daylight) (ISO 12625-7:2014); German version EN ISO 12625-7:2014