本欧洲标准规定了纸张中可见的对照物的反射光的估计测试方法。目视检查适用于大多数纸张和纸板。需要通过附件B所述的工具手段检查具有相当高含量的纸张和纸张，因为大量计数会减少法官的精确度。然而，不平坦的纸张具有低的亮度（低于30％的值），并且包含可能对仪器技术造成特殊问题的孔（见附件B）

This European Standard specifies the test method for the estimation by reflected light of the visible contraries in paper. Visual inspection is applicable to most kinds of paper and board. Paper and board with an apparently high content of contraries require to be inspected by instrumental means as described in Annex B, as the tedium of large counts diminishes the judges' precision. However, papers which are not flat, have a low lightness (value below 30 %) and contain holes that may cause particular problems for instrumental techniques (see Annex B).