electro-osmotic pressure

The pressure difference Δ p across the membrane, plug, etc., needed just to stop electro-osmotic volume flow. Δ p is positive if the higher pressure is on the high potential side.
PAC, 1972, 31, 577 (Manual of Symbols and Terminology for Physicochemical Quantities and Units, Appendix II: Definitions, Terminology and Symbols in Colloid and Surface Chemistry) on page 620