康宁corning耗材3450TW CLR,24MM,0.4UM,TCT,PE,S,6PL/24TW CLR,24MM,.04UM,TCT,PE,S,6P Transwell-膜嵌套 24mm膜直径 0.4um孔径PE（聚酯）膜 TC表面 灭菌4包/箱