本文件规定了一种通过测定实际干膜密度来测定涂料的非挥发性物质体积(NVV)的方法。该方法通过在任何指定的温度范围和干燥或固化时间内测量干涂层的密度来确定油漆、清漆和相关产品中非挥发性物质的体积百分比。根据ISO 3251测定非挥发性物质含量。 使用根据该文献获得的按体积计的非挥发性物质结果，可以计算涂料的实际铺展速率。 该方法规定了ISO 32331中描述的板的附加形状，并且适用于可以通过浸渍施加的所有产品。 本文件不适用于超过临界颜料体积浓度（CPVC）的涂料。附录A概述了测定非挥发性物质含量和非挥发性物质体积的现有方法。

This document specifies a method for determining the non-volatile matter by volume (NV_V) of coating materials by determining the practical dry-film density. This method determines the volume percentage of non-volatile matter in paints, varnishes and related products by measuring the density of a dry coating for any specified temperature range and period of drying or curing. The non-volatile matter content is determined in accordance with ISO 3251. Using the non-volatile matter by volume results obtained in accordance with this document, it is possible to calculate the practical spreading rate of coating materials. This method specifies an additional shape of plate to those described in ISO 3233？1 and is suitable for all products which can be applied by dipping. This document is not applicable to coating materials which exceed the Critical Pigment Volume Concentration (CPVC). Annex A gives an overview of the existing methods for the determination of non-volatile matter content and of non-volatile matter volume.