康宁corning耗材3397TW,HTS,6.5MM,0.4UM,S,BK,12/12TW,HTS,6.5MM,0.4UM,S,BK,12/12 HTS TRANSWELL-24膜嵌套 6.5mm膜直径 0.4um孔径PC(聚碳酸酯）膜 灭菌 散装1包/箱