Nalgene 597-3320 瓶顶过滤器1000ml容量,MF75TM系列，聚苯乙烯外壳，Supor*machV PES膜,孔径0.2um,适合瓶颈尺寸33mm BTLTOP A-PES 33MM 1L 90MM Labware and Bottles 12 12 2689