Aqueous solutions of potassium chloride were allowed to flow through air. The solutions were from 10-1 N to 10-7N. The hydrostatic pressure was from 23 to 80 cm. of solution. The flow was vertical and laminar, through a circular aperture in a thin platinum disc on to a second platinum disc. The diameter of the aperture was 0.05 cm. The discs served as electrodes. The potential difference was measured with a vacuum tube potentiometer. A F.P. 54 G. E. tube was used, so the potential difference was measured with essentially no current flow.
Proceedings of the Iowa Academy of Science
©1937 Iowa Academy of Science, Inc.
Eversole, W. G. and Deardorff, D. L.
"Electrokinetic Potentials at Liquid Surfaces,"
Proceedings of the Iowa Academy of Science, 44(1), 109-110.
Available at: https://scholarworks.uni.edu/pias/vol44/iss1/23