PVDF filter media, particularly microporous membranes, can be prepared to exhibit high efficiency for particle removal. PVDF has a low critical surface energy and conventional, hydrophobic, microporous PVDF membranes will not wet with aqueous fluids.MS Membrane stack consists of reinforced-type PVDF membrane. It can ensure wet air and other gas pass through smoothly, even when the differential pressure is very low. It holds the opposite capability against PVDF hydrophilic membrane