50ml超滤管Pall颇尔1.5ml5ml20ml离心浓缩管1/3/10/30/100/300kd蛋白分离纯化核酸微生物浓缩Omega膜MAP100C

50ml超滤管Pall颇尔1.5ml5ml20ml离心浓缩管1/3/10/30/100/300kd蛋白分离纯化核酸微生物浓缩Omega膜MAP100C