An active matrix driven electro-optical device, such as a liquid crystal device, enabled to add sufficient storage capacitance to pixel electrodes and decrease the diameter of contact holes connecting with pixel electrodes even when a fine pixel pitch is employed. More specifically, the inventive method uses an ammonia oxidation catalyst consisting of a zeolite, one or more precious metals, and a base metal compound, to catalyze the oxidation of both ammonia and carbon monoxide, while minimizing the formation of nitrogen oxides. The apparatus for handling a magnet is also equipped with a section where the plurality of split magnets are arranged. A solar powered rechargeable battery can be used to power a positive displacement pump. The crop sprayer includes a product tank defining a first cavity that is configured to contain a first quantity of fluid therein.