The optical analysis of drops that hang from a dosing needle or are placed on a solid surface facilitates the determination of different surface and interfacial parameters.

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