Nalgene 595-4520 瓶顶过滤器-500ml容量,MF75TM系列，聚苯乙烯外壳，75mm-Supor*machV PES膜,孔径0.2um,适合瓶颈尺寸45mm BTLTOP A-PES 45MM 500ML 75MM]] Labware and Bottles 12 12 1577