Pore Size (um): 0.10,0.22,0.3,0.45,1.0 Shape Size(mm): Disc Membrane : Φ13,Φ25,Φ35,Φ47,Φ50,Φ60,Φ77,Φ90,Φ100,Φ150,Φ200,Φ300: Square Membrane: Can be customized. Max Size: 1000 * 300 Roll Membrane: The width : 260,280,320,420mm; the length can be customized.