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