This document specifies a test method to measure the surface tension of liquids with an optical method using the pendant drop. The method can be applied for the characterization of liquid coating materials. If applied to liquids with non-Newtonian flow behaviour (as defined in ISO3219-1:2021, 3.22), restrictions can apply.
NOTEFor other methods to determine the surface tension, see e.g. EN14370 and ISO1409.