Abstract: The invention relates to a precipitation simulator consisting of a collecting area, onto which the precipitants can fall, and a tube, which extends from the lowest point of the collecting area to a transporting device and from there upwards as far as the nozzle, wherein the precipitant can be transported to the upper end of the tube by the transporting device and emerges there, wherein the nozzle is a hollow-body-like rail with outlet openings and wherein either there is an ionization system, consisting of at least one electrode that protrudes into the stream of air/precipitant mixture and/or supplied air and is connected to an alternating voltage of at least 1 kV, and/or the precipitants are provided at least on their surface with an electrically conducting layer.