Force Tensiometer The manual tensiometer for reliable basic measurements The K6 Force Tensiometer is a robust and reliable manual instrument for measuring surface and interfacial tension using the ring tear-off method. As a quality product from our precision mechanical workshop, it performs fast, easy, and accurate measurements for surfactant solutions and solvents. The K6 is also suitable for training purposes for demonstrating the action of the surface tension force in a comprehensible manner. Specifications Force measurement Calibration Calibration weight Du Noüy ring external weight CP11 or CP12 (optional) Sample stage Travel distance Results Range Resolution Correction method surface tension/interfacial tension 1 to 90 mN/m 0.5 mN/m linear correction