The influence of properties of product contact surfaces on cleanability is widely discussed in the food processing and pharmaceutical industry. In the present work stainless steel surfaces of different surface roughness, surface energy and electrokinetic properties were subject to organic soiling in order to study the influence of surface properties on cleanability. As food model test soils gelatinized starch and whey protein were chosen. The cleaning was realized by means of water jets from a flat fan nozzle.