Tensiometry and Contact Angle measurement techniques characterize the surface energy and wettability of solid materials and the interfacial tension of liquids. Optical tensiometers measure contact angle, surface free energy and dynamic wetting, while force tensiometers determine surface and interfacial tension. These techniques are essential in coatings, adhesives, printing, biomaterials, detergency and semiconductor manufacturing.
In optical tensiometry, a high-resolution camera images a liquid drop resting on a solid surface (sessile drop method) or hanging from a needle (pendant drop method). Automated drop shape analysis software fits the drop profile to calculate contact angle, surface tension and interfacial tension values. In force tensiometry, a Wilhelmy plate or Du Noüy ring is immersed in a liquid and the force acting on it is measured by a precision balance as the liquid surface interacts with the probe. This force, combined with the known probe geometry, gives surface tension with high accuracy.
A comprehensive suite of surface, electrochemical, and structural characterization instruments enables materials scientists to understand, optimize, and validate the properties
Pharmaceutical R&D and manufacturing rely on surface analysis, compound characterization, and real-time interface monitoring to develop safe, effective, and consistently
Analytical and surface measurement instruments support food and beverage manufacturers in ensuring product quality, stability, and compliance at every stage
