DIN 55660-1:2011-12

The standard specifies test methods for measuring contact angles, for determining the free surface energy of a solid surface, including the polar and dispersive part, for measuring the surface tension of liquids, including the polar and dispersive part, and for validating the measuring assempbly using reference materials using optical methods. It can be used for characterizing substrates, coatings and coating materials. This part speifies terms and definitions and the general principles.