Surface and interface characterization using tensiometric methods:

• Static surface and interfacial tension by the Wilhelmy plate method and Du Nouy ring method
• Determination of the critical micelle formation concentration (CMC) and the critical aggregation constant (CAC)
• Dynamic surface tension measurements with the bubble pressure method
• Dynamic interfacial tension measurements by the drop volume method
• Contact angle measurements on plane surfaces by the Wilhelmy plate method and contact angle measurements on powder and fiber samples according to the Washburn sorption method
• Single fiber measurements to determine the wetting behavior
• Surface free energy determinations on powders, fibers, textiles and plane solids based on contact angle measurements

Surface and interface characterization using optical methods:

• Contact angle measurements on non-porous and porous solids as static or dynamic measurements, or as a function of time (e.g. for adsorption processes)
• Determination of the surface free energy of non-porous and porous solids based on contact angle measurements
• Determination of the polar and disperse fractions of the surface free energy
• Determination of adhesion energies