Surface analysis

Contact angle goniometry (CAG)


Surface of solids

  • Sample size : > 20 mm x 20 mm
  • Test liquids: water, formamide, glycerin, trikresylphosphate, methylene iodide; others on demand



  • Krüss  DSA100 automated video goniometer


Results and data processing

  • Surface free energy
  • Lewis-acid/base properties
  • Owens/Wendt model, van Oss model


Additional information



  • Determination of wetting properties
  • Evaluation of Treatments / quality control of activation, functionalization, coating, cleaning processes


Comparative and additional methods

  • X-ray photoelectron spectrometry (XPS)
  • Fluorescence labelling (FL)
  • Secondary ion mass spectrometry (SIMS)