Research Area

Surface Technology

Dynamic Contact Angle Meter and Tensiometer DCAT 21 from DataPhysics

The DCAT 21 is used for software-controlled determination of

  • the contact angle of powders and fibre bundles and the adsorption behavior of liquids on wettable materials according to the modified Washburn method
  • the dynamic contact angle and surface free energy on prismatic and cylindrical specimens according to the Wilhelmy method
  • the static surface and interfacial tension of liquids
  • the critical micelle formation concentration of surfactants (CMC) according to the Wilhelmy plate method, Lenard Bügel method or the Du Noüy ring method with automatic ring correction according to Huh & Mason, Zuidema & Waters, Harkins & Jordan

consisting of

  • High precision electrodynamic compensation weighing system with automatic calibration function
  • Software-controlled motor-driven height adjustment of the sample vessels with variable speed
  • Integrated measurement and control electronics with digital thermometer
  • Graphic display for displaying weight values, temperature and other operating states
  • Serial RS 232C interface
  • Illuminated sample chamber with inert gas connection
  • Borosilicate glass sample vessels
  • Du Noüy ring RG 11 made of platinum-iridium according to DIN 53914

Dr. Doreen Keil

Surface Technology

Phone: +49 3641 28254