Whatman Membranes - 0.2um. Whatman Nuclepore Hydrophilic Membrane, 0.2 µm Pore Size, 8 x 10 in sheet, 25 Pack, 10417050. Regular Price $738.69 Price $641.49. Add to Cart. Add to Wish List. Whatman 10401772, Mixed Cellulose Ester Filter, ME Range (ME 24), plain, 0.2 um pore size, 50 mm circle (100 pcs) Regular Price $154.33 Price $134.02.