OCA - Optical contact angle measuring and contour analysis systems

The optical contact angle measuring and contour analysis systems of the OCA series combine high resolution optics, exact liquid dosing and precise sample positioning into powerful and reliable measuring systems.

Application focus

• static and dynamic contact angle measurement using the sessile drop method
• determination of surface energy of solids
• optical determination of surface tension and interfacial tension using the pendant drop method
• fully automatic sample mapping 

Articles

Contact angles and fuel cells
New superhydrophobic surfaces 
Topview contact angle meas

Brochure

DCAT - Dynamic Contact Angle measuring devices and Tensiometer

The dynamic contact angle measuring instruments and tensiometers of the DCAT series are multi-functional instruments for the force-based measurement of various surface and interfacial properties like surface tensions, critical micelle formation concentration, adhesion or surface pressure. A wide range of test bodies and sample holders as well as specific upgrade modules are available for the different measuring methods. Based on a well-established and accepted measuring technique and utilising state-of-the-art weighing technology, the highest precision and reproducibility of the measured results is guaranteed.

Application focus

• surface tension and interfacial tension measurements using standardised test bodies like Du Noüy rings or Wilhelmy plates
• fully automatic determination of the critical micelle formation concentration (CMC)
• dynamic contact angle measurements
• density determination for liquids and solids
• sedimentation and penetration analysis
• surface pressure analysis with a Langmuir Trough
• force of adhesion determination

Articles

Langmuir trough module for DCAT 25