SIZEHydrophobic -Hydrophilic -QTY per pack  Order numberOrder number  13mm, 0.22um13PVDF2213LPVD22500      13mm, 0.45um13PVDF4513LPVD45500      25mm, 0.22um25PVDF2225LPVD22500      25mm, 0.45um25PVDF4525LPVD45500