Whatman Filtration Devices, Polypropylene, 0.2um, .45um, Material: Polypropylene , Pore Size: 0.2um 0 Whatman 6878-1302 GD/X 13 mm Syringe Filter, polypropylene filtration medium, 0.2 um (150 pcs) Regular Price: $400.66 Price $348.40 Add To Cart Whatman Puradisc 25 mm Depth PP Syringe Filters, 0.45 µm, 200 Pack, 6788-2504