Wilhelmy balance

Wil·hel·my bal·ance

a device for measuring surface tension in terms of the pull exerted on a thin plate of platinum or other material suspended vertically through the surface; used in a Langmuir trough to study pulmonary surfactant.

Wilhelmy,

Ludwig F., German scientist, 1812-1864.
Wilhelmy balance - a device for measuring surface tension used in a Langmuir trough to study pulmonary surfactant.
References in periodicals archive ?
The Wilhelmy balance was also used to measure "hysteresis", the difference between the advancing contact angle as the lens contacts the liquid and the receding angle as the lens is removed from the liquid.
A review of literature comparisons reveals the Wilhelmy Balance method to be the benchmark, followed by the tilted plate and the sessile drop methods (Lander et al.
1993) determined that the sessile drop method gave the lowest contact angles and was the least reproducible when compared to the Wilhelmy balance and tilted plate methods.