EXW price 0.2 um ptfe syringe filter Whatman-Voa Vial . EXW price 0.2 um ptfe syringe filter Whatman Whatman Syringe Filters, 0.2um, Pore Size: 0.2um Whatman 6869-2502 GD/X 25 mm Syringe Filter, nylon high charge (positive), nylon filtration medium, 0.2 um (150 pcs) Regular Price: $505.85.