Nov 16, 2021 · Restek PTFE membrane filter 0.2 um for acids-Analytical [] Oct 29, 2021 · Leading Supplier of PTFE Syringe Filter,Welcome to Inquiry plastic 0.22 um PTFE filter Restek-Analytical Testing Vials Sep 28, 2021 · PTFE Membrane Filters, 0.22 um, 25mm, Nonsterile, with PP substrate (Meets the requirements of USP Plastics Class VI