Technical DescriptionThe test stand facilitates basic experiments in the areas of percolation action on rain and in ground water flows. In particular, the permeability and storage capacity of soil can be very clearly observed. The experiments are performed in a stainless steel tank filled with sand. This tank is equipped with a sprinkler system so that rain can be simulated. In addition, there are 2 wells for lowering the ground water. Measuring points are fitted over the entire underside of the tank. The water levels in the sand bed can be read on a multiple tube manometer. The tank is equipped with several methods of filling and draining, the water supply is provided using a supply tank and a circulating pump.