Several techniques are employed in tensiometry, including:
Pendant Drop Method: A droplet of liquid is suspended from a needle, and its shape is analyzed to determine surface tension. Wilhelmy Plate Method: A thin plate is partially immersed in a liquid, and the force exerted on it by the liquid is measured. Du Noüy Ring Method: A ring is submerged and then pulled out of the liquid, and the force required to break the liquid film is measured.
