This European Standard specifies a method for the determination of the surface free energy of a solid surface
by measuring the contact angle of a liquid wetting the solid surface. It allows the prediction of the ability of a
particular adhesive to wet a particular adherend. It can be used to characterize surfaces intended for
pre-treatment, coating or bonding.
NOTE 1 In order to determine the surface free energy, the method of measuring the static contact angle is used in
combination with a statistical interpretation.
NOTE 2 The measurement results are influenced by mechanical surface roughness and chemical homogeneity.