本文件规定了测定表面极性和分散部分的试验方法 用光学方法测定液体的张力。该方法可用于液体的表征 涂层材料。 适用性可能会受到非牛顿流变性液体的限制1）。 本文件假设待测液体的表面张力和表面 分散参考固体的自由能是已知的。交叉引用:ISO 19403-1:2017ISO 19403-2:2017ISO 4618:2014ISO 19403-3:2017ISO 15528:2013ISO 1409:2006EN 14370:2004ISO 25178-2:2012ISO 3270:1984（R08）DIN 1342-1:1983（英译）ISO 4288:1996包含以下内容:勘误表，2020年3月

This document specifies a test method to determine the polar and dispersive fractions of the surface tension of liquids by optical methods. The method can be applied for the characterization of liquid coating materials. The applicability can be restricted for liquids with non-Newtonian rheology1). This document assumes that the information of surface tension of the liquid to be tested and the surface free energy of the dispersive reference solids is known.Cross References:ISO 19403-1:2017ISO 19403-2:2017ISO 4618:2014ISO 19403-3:2017ISO 15528:2013ISO 1409:2006EN 14370:2004ISO 25178-2:2012ISO 3270:1984 (R08)DIN 1342-1:1983 (Eng Trans)ISO 4288:1996Incorporates the following:Corrigendum, March 2020