DCAT 25 Tensiometers

DCAT 25 Tensiometer – Versatile Surface and Interfacial Tension Measurement System

The DCAT 25 Tensiometer by DataPhysics Instruments is a high-precision, modular system designed for comprehensive surface and interfacial tension measurement. Built to handle a variety of liquids and solids, this instrument is essential for advanced material testing in research and industrial labs.

The DCAT 25 features an electrodynamic compensation weighing system that delivers accurate and repeatable force-based measurements. It is capable of performing surface and interfacial tension analysis using Du Noüy ring and Wilhelmy plate methods, making it ideal for applications in chemistry, pharmaceuticals, and materials science.

This surface tension analyzer excels at dynamic contact angle measurement, enabling precise evaluation of wetting behavior on solid materials like plates, rods, and fibers. With automated sample positioning and motor-driven height control, users benefit from consistent, hands-free operation.

Thanks to its modular design, the DCAT 25 supports a wide range of accessories, including dosing systems, temperature-controlled units, and Langmuir trough modules. It can handle temperature ranges from -10 °C to 250 °C, extendable to 300 °C, allowing for experiments under controlled thermal conditions.

The intuitive TP 50 touchscreen control panel and precision wheel provide seamless user interaction. Whether analyzing critical micelle concentration (CMC), liquid density, or adhesion force, the DCAT 25 Tensiometer offers unmatched versatility and accuracy.

With its powerful capabilities, the DCAT 25 stands out as a complete solution for laboratories needing advanced tools for dynamic contact angle measurement and interfacial science.

The DCAT 25 Tensiometers is the multifunctional all-round instrument of the DCAT series. The weighing system is even more precise than that of the DCAT 9 and 15 and hence offers highest accuracy for the determination of surface and interfacial tension. A completely closed sample chamber enables measurements under inert gas or ionised atmosphere as well as with controlled relative humidity.

Due to the longer travel distance of the sample stage, an electrical temperature control unit can be mounted inside the DCAT 25 which makes measurements at temperatures of up to 300 °C possible. Moreover the Langmuir trough module can be used to investigate the surface pressure and the interfacial rheology of monolayers. The upgrade video system provides the opportunity to record video-sequences during force of adhesion measurements and to evaluate contact angle, contact area etc. in addition to the force. The optional TP 50 control panel with touch screen and precision control wheel is recommended ensures an intuitive and fast device control even during complex measurements.

Features DCAT 25 Tensiometers

• high resolution electrodynamic compensation weighing system with automatic and manual calibration function
• software controlled, motor-driven height positioning of the sample receptacles with variable speed
• automatic coupling lock for the balance
• automatic crash protection for measuring probes during measurement
• closed illuminated sample chamber
• integrated magnetic stirrer
• digital thermometer with connections for two Pt 100 temperature sensors
• optional TP 50 control panel with touch screen and precision control wheel is recommended
• compatible with the liquid dosing unit LDU 25
• compatible with the electrical temperature control unit TEC 25 /DCAT
• compatible with the upgrade video system UpVideo DCAT
• compatible with the Langmuir trough module LTMr