This paper presents the work of designing and evaluating an electrostatic collector that collects highly electrical mobile positive and negative ions after the charger or ionizer of the mini-volume electrical PM detector. Its collection characteristics were experimentally determined at applied voltages at the inner electrode between 0 and 45 V, ion flow rates between 1 and 5 L/min, and an operating pressure of about 1.01 105 Pa. The ions precipitates due
to space charge and diffusion effects were evaluated. Also, a commercial computational fluid dynamics software package COMSOL Multiphysics™ was used to predict the behavior of the flow and electric fields as well as the ion and particle trajectories in the collecting zone of the ion collector