Electrochemically driven steady convective diffusion is analyzed for electrodiffusion friction probes of arbitrary convex shape in a stream of microdisperse liquid, assuming non-linear velocity profiles ranging from simple shear flow (p = 1) to ideal slip motion (p = 0). Correction on the edge effects due to spatial diffusion at medium Peclet numbers is given, using the recent numerical data about the strip-like probes by Wein [25] Simple correction formulas are presented for the disk-like probes (C) 2010 Elsevier Ltd All rights reserved