EXW price 0.22 um PTFE filter Corning-Analytical Testing Vials EXW price ptfe 0.22 micron filter Corning-PTFE Membrane Filter Low Cost PTFE Syringe Filters - Samples Available - Ships. PTFE Syringe Filters, 0.22 um, 20mm, Threaded Double Luer Lock, ABS Housing, Nonsterile, 100 per pack,