SLGV033RS 孔径0.22um,直径33mm,PVDF针头式滤器,过滤量100ml 50个/包 500 420 Millipore SLHV033RS 孔径0.45um,直径33mm,PVDF针头式滤器,过滤量100ml 50个/包 500 420 Millipore