Whatman Nuclepore Hydrophilic Membrane, 0.2 µm Pore Size, 50 mm Circle, 100 Pack, 111206. Regular Price $200.09 Price $173.76. Add to Cart. Add to Wish List. Whatman Nuclepore Polycarbonate Black Membrane Filter, 0.2 µm Pore Size, 47 mm Circle, 100 Pack, 111156. Regular Price $188.37 Price $163.59.