Abstract: A device for processing a disc-shaped substrate, which device comprises a plurality of stations arranged in side-by-side relationship, whereby the substrate can be moved into and out of the device in a first station and be subjected to a processing step in a second station, said device furthermore being provided with a transport mechanism for transporting the substrate between the various stations, whereby each station comprises two side walls and an intermediate plate extending between said side walls, which intermediate plate is provided with a guide section extending between the sides of said side walls that face away from each other, whereby stations positioned adjacently to each other are attached together by means of the side walls facing each other and whereby said stations are positioned with respect to each other in such a manner that the intermediate plates and the guide sections are in line, whereby the transport mechanism is capable of movement between the various stations over said guide sections