Common use 0.2 um ptfe filter Pall . Acrodisc® 0.2 μm 25 mm Vent Filter Capsules,Acrodisc® 0.2 μm 25 mm Vent Filter Capsules - Pall . 4 1. Overview This document is designed to assist the filter user in meeting the validation requirements of regulatory authorities within the pharmaceutical industry for the use of Acrodisc 0.2 µm 25 mm vent