Particle separator having a flow passage for air to be cleaned from electrically charged particles includes at least two electrode element surfaces arranged substantially parallel to each other and at a mutual gap width (d), at least one electrode element surface being designed from a very high ohmic material, preferably with a resistivity corresponding to or higher than antistatic. The particle separator also is intended to be connected to a high voltage source, the second electrode element surface being intended to be connected to the pole of the high voltage source having the lowest absolute potential.