BS ISO 19403-4:2017规定了测定表面极性和分散分数的试验方法 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，尤其是在测量过程中出现干燥效应时。适用性可以是 仅适用于具有非牛顿流变性的液体1）。本文件假设待测液体的表面张力信息以及 已知至少一种合适的参考液体。交叉引用:ISO 1409:2006 Ed 5ISO 19403-3:2017ISO 4618:2014 ED2ISO 19403-5:2017ISO 15528:2013 ED2EN 14370:2004ISO 19403-1:2017 ISO 2808:2007 Ed 4（R10）ISO 3270:1984（R08）DIN 1342-1:1983（英译）购买本文件时提供的所有当前修订版均包含在购买本文件中。

BS ISO 19403-4:2017 specifies a test method to determine the polar and dispersive fraction of the surface tension of liquids with optical methods. The method can be applied for the characterization of liquid coating materials, especially when drying effects occur during measurement. 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, as well as at least one suitable reference liquid, is known.Cross References:ISO 1409:2006 Ed 5ISO 19403-3:2017ISO 4618:2014 ED2ISO 19403-5:2017ISO 15528:2013 ED2EN 14370:2004ISO 19403-1:2017 ISO 2808:2007 Ed 4 (R10)ISO 3270:1984 (R08)DIN 1342-1:1983 (Eng Trans)All current amendments available at time of purchase are included with the purchase of this document.