2021/12/08 · Pall 0.2 um PTFE filter for petrochemicals-Analytical Testing Dec 02, 2021 · 1-800-521-1520. Description. PTFE Membrane Disc Filters - TF 200, 0.2 µm, 142 mm (25/pkg) “Pall Laboratory products are designed for laboratory applications only. This product is not approved for use in medical, clinical, surgical or other patient applications.