Nalgene 296-3345 瓶顶过滤器-150ml容量,MF75TM系列，聚苯乙烯外壳，PES滤膜，孔径0.45um,适合瓶颈尺寸33mm BTLTOP PES 33MM 150ML 50M;.45U Labware and Bottles 12 12 1222