A fixed filter assembly kit includes a plurality of filters with associated terminals inside a case. 5 to 95% by weight of an aromatic vinyl-isoprene block copolymer having two or more poly blocks, 0 to 47. The flange portions of the three follower pins are interposed between the outer periphery of the second-group frame and the inner periphery of the zoom frame. Liquid phosphorus is then separated from the water.