The probe holds a very important position in a composition os the force tensiometer. The force depends on the following factors: size and shape of the probe, contact angle between the probe and the liquid, and the surface tension of the liquid. There are 2 commonly used types of probes for force tensiometers ; the du Noüy ring and the Wilhelmy plate. A metal rod can also be used instead of a Wilhelmy plate when sample volume is limited.
Sigma Series

Automated Force Tensiometer
Versatile automated force tensiometers for a well-suited for a spectrum of applications

High Precision Force Tensiometer
Standalone force tensiometer

Sigma 702
Straightforward, efficient, and durable solution