ISO 2470-2:2008规定了纸浆、纸张和纸板D65亮度的测量方法。 ISO 2470-2:2008的适用范围仅限于白色和接近白色的纸浆、纸张和纸板，尤其是那些显示荧光的纸浆、纸张和纸板，这些荧光会促进白度的出现。只能在仪器中进行测量，在仪器中，使用荧光参考标准调整照明的紫外线能级，使其与CIE标准光源D65相对应。 ISO 2470-2:2008中使用的光源激发的荧光几乎是ISO 2470-1中光源的两倍。因此，ISO 2470-2:2008更适合测量荧光对亮度的贡献。然而，D65亮度不应与ISO亮度混淆，后者与室内条件下查看的纸张亮度非常接近。

ISO 2470-2:2008 specifies a method for measuring the D65 brightness of pulps, papers and boards. ISO 2470-2:2008 is limited in its scope to white and near-white pulps, papers and boards, particularly those exhibiting fluorescence which promotes the appearance of whiteness. The measurement can only be made in an instrument in which the ultraviolet energy level of the illumination has been adjusted to correspond to the CIE standard illuminant D65 using a fluorescent reference standard. The source employed in ISO 2470-2:2008 excites almost twice as much fluorescence as the illuminant in ISO 2470-1. Consequently, ISO 2470-2:2008 is better suited for measuring the fluorescent contribution to the brightness. However, D65 brightness should not be confused with ISO brightness which closely approximates the brightness of papers viewed under indoor conditions.