An apparatus for producing containers may include a transport unit which transports the containers along a specified transport path, at least one handling unit which handles the containers in a specified manner, a closing unit which is located downstream of the handling unit in a transport direction of the containers and which fits closure tops onto the containers, and a feeding unit which feeds the closure tops to the closing unit. An inspection unit may be provided upstream of the feeding unit in a transport direction of the closure tops. The inspection unit inspects the closure tops and emits at least one signal which is characteristic of the physical condition of the closure tops.