A glass substrate distribution system includes a cassette, a first transmission mechanism, and a second transmission mechanism. The contact part is formed so that an end of the contact surface on a center of the opening-side is positioned closer to an outer circumference of the base plate of the lower case than a virtual plane that extends from the guide surface. The surface element which is associated with the folding device is designed in such a manner that it takes its closed position automatically. Some hydrogel materials do not have this type of homogeneous interconnected macroporosity, thus large target molecules cannot readily diffuse through them. Also disclosed are methods, processes, production lines, articles of manufacture, and factories which incorporate these environmentally friendly, substantially all solids coating compositions curable using ultraviolet and visible radiation. During the backwash process, the filter media rises past the nozzle as the level of the backwash liquid in the housing rises, so that the entire filter media is regenerated.