DIN EN ISO 12625-7:2021
纸巾和纸巾产品 第7部分:光学特性的测定 使用 D65/10°(室外日光)测量亮度和颜色(ISO 12625-7:2021);德文版 EN ISO 12625-7:2021
Tissue paper and tissue products - Part 7: Determination of optical properties - Measurement of brightness and colour with D65/10° (outdoor daylight) (ISO 12625-7:2021); German version EN ISO 12625-7:2021