Does the Maximum in the Zeta Potential of Monodisperse Polystyrene Particles Really Exist? An Electrokinetic Study

The zeta potential of monodisperse polystyrene latices as a function of ionic strength is usually reported to display a maximum. In this paper it iis shown that this is either due to artefacts in measuring streaming currents and electrical conductances of plugs, or to the anomalous surface conductance inherent to these systems not being accounted for in the theories relating electrophoretic mobilities to zeta potential