ISO 12625-7:2014规定了在户外日光条件下观察的纸巾和纸巾产品的亮度和颜色的仪器测定的测试程序。它还给出了制备测试件（单层，多层产品）以及可能需要特殊预防措施的产品的光学测量的具体说明

ISO 12625-7:2014 specifies testing procedures for the instrumental determination of brightness and colour of tissue paper and tissue products viewed under outdoor daylight conditions. It also gives specific instructions for the preparation of test pieces (single-ply, multi-ply products) and for the optical measurements of products, where special precautions may be necessary.