Abstract: An electrostatic filter for the separation of particles includes a particle charging unit arranged upstream, includes at least one corona wire for the charging of particles and a particle collector unit arranged downstream relative to it. The particle collecting unit includes two groups of plate-like elements (1, 1′) arranged essentially parallel between each other and the flow direction through the device at a predetermined distance from each other, wherein a first group of elements (1) is connected to earth (3) and a second group of elements (1′) is electrically insulated with reference to the device and to the first group of elements (1) and that the elements (1, 1′) essentially are made of one or more non-hygroscopic polymer materials with a mass resistivity which preferably lies within the region of 1×102 &OHgr;cm to 1×108 &OHgr;cm.