An improved perpendicular magnetic recording medium and an improved magnetic storage apparatus are provided, which are suitable for high speed and high density magnetic recording. The RVM includes an item supporting, rotating, sorting and conveyor unit, an upright storage chamber for such items, a safety apparatus to avoid operational hazards, a camera aided detection device for detecting at least one of a bar code on and other characteristics, e. The unique information includes information on a catalyst composition of the catalyst electrode. Preferably, a sticky surface on at least a portion of the interior of the compartment maintains the insects within the compartment. The liquid nozzle is attached to an arm capable of being turned reversibly around a turning shaft, and the movement of the liquid nozzle is controlled by the turning angle of the arm for either one axis of the X-axis and the Y-axis and is controlled by changing the length of the arm from the turning shaft for the other axis.