Abstract: A detection apparatus for detecting leaks in items using tracer gas. The apparatus comprises a plurality of cells which are provided so as to receive an item to be subjected to separate phases of a detection process in order to detect the leaks, and a detection system using tracer gas provided to be connected via suitable connection devices to each cell of the plurality of cells in order to carry out the various phases of the detection process, wherein the cells are positioned on a moving device in order to be successively moved towards separate work stations of the apparatus in order to be subjected to the separate phases of the detection process.