Surface Science Specialists:


Home / Portfolio / OCA 15 EC

Economical Research Video-based Contact Angle Measuring Device

The OCA 15EC is the budget-priced R&D instrument for automated video-based contact angle metrology and drop shape analysis. It can be easily equipped with various modules to extend its additional capabilities and specs.


Sessile Drop, Pensdant Drop, Captive Bubble, Needle-in-drop, Static/Dynamic Contact Angle, Static/Dynamic Surface Tension, Static/Dynamic Interfacial Tension, Absoprtion, spreading, wicking, phenomena, etc.  It features proprietary software-controlled measurement and analysis of;

  • Contact Lamella Method on any liquid including pastes and polymer melts.
  • Static and Dynamic contact angle according to the Sessile and Captive Drop Methods as well as the analysis of the drop shape according to the Pendant Drop Method.
  • Wetting behavior of solid surfaces.
  • Surface energy of solids surfaces and their components for Work of Adhesion/calculation. Surface and interfacial tension through the analysis of the Pendant Drop Shape Method.


  • Dosing bay for installation of single or multiple (max. 4) syringe units including needle support with vertical and horizontal fine adjustments. Alternatively, a direct dosing unit with one electronic syringe unit is also available.
  • Measuring stage, adjustable in three axes for accurate sample positioning.
  • Lens mount with adjustable tilt.
  • High-performance six-fold power zoom lens with an integrated continuous fine focus.
  • Video system with adapter and CCD-camera.
  • High-performance video digitizing board (frame grabber) for PC.
  • Halogen lighting with continuously adjustable intensity without hysteresis for a homogeneous back lighting.
  • Power supply with automatic voltage adjustment.

Wetting image

The 64-bit Windows 7/8 Compatible Software (SCA)

  • Static and dynamic contact angle measurement according to the Sessile and Captive Drop Method
  • Calculation of the surface and interfacial tension from the contours of pendant and sessile drops as well as from liquid lamellas on plates, rods and threads.
  • Calculation of free energy of solid surfaces and their components (e.g. dispersion, polar and hydrogen bond force contribution, and their respective acid and base portions) according to the theories of Wu, Zisman, Owens-Wendt, Extended Fowkes, Schultz 1, Schultz 2, Fowkes, Equation of State, and Van Oss & Good (FOCG).
  • Statistics and measurement error analysis 



 Most Updated Specs and Pricing



Available Custom Modular Options, which include, but are not limited to: