ISO 2811-4:2011规定了使用压力杯测定涂料、清漆和相关产品密度的方法。 该方法适用于充气产品。例如，乳胶漆通常会捕获小气泡，在测量密度时，这些气泡可能仍然存在。 然而，它不适用于含有粗颗粒的纹理涂料。

ISO 2811-4:2011 specifies a method for determining the density of paints, varnishes and related products using a pressure cup. The method is suitable for products which are aerated. Emulsion paints, for example, often trap small air bubbles, and these might still be present when the density is measured. It is not, however, suitable for textured paints which contain coarse particles.