Bio-rad 162-0112 NITROCEL MEMB 0.2UM,30CMX3.5M 硝酸纖維素膜NC膜0.2um孔徑

Bio-rad 162-0112 NITROCEL MEMB 0.2UM,30CMX3.5M 硝酸纖維素膜NC膜0.2um孔徑