A column parallel image sensor such as an active pixel sensor includes a calibration circuit for the readout circuit within the active pixel sensor. The application further relates to methods of use and preparation of such stable liquid washing or liquid cleaning agents and their anti-greying powers. Semiconducting nanocrystallites can photoluminesce and can have high emission quantum efficiencies. Each bracket device has a base body with ridges, a casing with an inner core, a lock on the side of the casing and a mount. Electric wires and a water line extend downwardly through the bushing to an ice and water dispenser in the door.