DCAT 11 

Dynamic Contact Angle Measuring System + Tensiometer

The DCAT 11 performs the software-controlled measurement of

• Dynamic contact angle and the surface energy of cylindrical  and prismatic samples according to the Wilhelmy method
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• Static surface and interfacial tension of liquids
• Contact angle of powders and fiber bundles and the adsorption behavior of liquids on wettable materials according to the modified Washburn method
• The critical micelle formation concentration of surfactants (CMC) according to the Wilhelmy Plate method, Lenard Frame method or the Du Nouy Ring method with automatic ring correction according to Huh & Mason, Zuidema & Waters and Harkins & Jordan methods
• Fully automated reproducibility measurements.

• High-precision electro-dynamically compensated weighing system with automatic calibrating function
• Software-controlled motorized height positioning of the sample vessel with variable speed
• Integrated measuring and control electronics with digital thermometer

• Graphical display for weighing data, temperature and other measuring statuses
• Serial RS 232C interface with PC connecting cable
• Illuminated sample chamber with connection for inert gas
• Sample vessels of borosilicate glass available with diameters 50,70,100 mm
• Pt100 temperature sensor for the installation in the temperature control unit
• Du Nouy ring RG 11, made of platinum-iridium to DIN 53914
• Wilhelmy plate PT 11, made of platinum-iridium to DIN 53914

It is prepared for the installation of a fluid circulation temperature control unit with an integrated magnetic stirrer for mounting either one of the sample vessels TV 50 / TV 70 / TV 100.

The 32-bit  Windows NT based software developed for Windows 2000/XP offers by various expansion steps. The analyses according to different methods options were implemented in the software.

LDU 2/2 (Liquid dispensing unit) For use with DCAT11 Tensiometer Critical Micelle Concentration (CMC) Measurement