The vial inspection device is designed to automatically and synchronously feed individual vials to oxygen and pressure sensors for non-destructive inspection of the oxygen content and total pressure in the vial vapour space. The vials are loaded onto a turntable and fed into the system by a continuously running conveyor that also acts as a dispensing conveyor. The incoming flow of vials is controlled and metered by two pneumatic barriers that open and close according to the length of the incoming queue. After the vials have been taken over by the inspection star wheel, they are passed through the pressure sensor and then through the oxygen sensor. The result of each measurement is temporarily stored in the PLC scrolling register until the decision to accept or reject the vial is made. After inspection, the vials are released from the inspection starwheel to the exit conveyor or to one of the two rejection conveyors. The first rejection conveyor accepts vials that have not been inspected (not measured), while the second rejection conveyor accepts rejected vials based on measured values. The accepted vials are held in place by the vacuum in the inspection star wheel until they have passed the rejection belts. When the vial reaches the exit conveyor, it is released from the vacuum. If a vial is to be discarded, it is released from the vacuum into position above the correct rejection conveyor. The vial is then removed from the star wheel and transported to the rejection lane.