In a first aspect of the present invention, a camera exposure control system is provided. In particular, the new device is specifically applicable to the measurement of carbonation levels in soft drinks. Each object has a predetermined outline. The plant also includes an air supply system for directly feeding in feed air at the processing locations. The shuttle defines a first aperture, at least in part, that alternately accommodates: a first mold stack arranged therein; and a first molded article received therein with opening of the first mold stack. The cover may be removed and replaced in order to access the culvert system for easy cleaning.