The 13mm filters can filter 5 to 10mL of . 0.22 um PTFE filter for wholesales-Analytical Testing Vials. 0.22um 10" PVDF PES PTFE Microelectronics Filter Membrane Pleated Water Gas Filters. General Description. The membrane filter element is made of imported PVDF PES PTFE membrane and imported non-woven fabric and mesh as the support layers.