high flow rate 0.22 um ptfe filter manufacturer Hydrophobic PTFE Membrane Filtration Diameter 0.22à ¼m Por â â High filtration efficiency,High Flow Rate, Diameter : 13mm/ 25mm/ 47mm/ 50mm/ 90mm , Pore Size: 0.22um or 0.45 um. 100pcs/pk â â Pure membrane, low dissolution, no shedding,good resistance to Chemical and high temperature.