Pall ptfe 0.2 micron filter for acids Poly-Fine® II Series Filter Cartridges - Pall Corporation Filter grades 0.2, 0.25, 0.45, 0.8, 2, 3, 5, 10, 30, 50, 100 µm Recommended change-out differential pressure1 2.4 bard (35 psid) Maximum forward differential pressure 4.8 bard (70 psid) @ 20 C (68 F) 2.8 bard (40 psid) @ 65 C (150 F) Food and water contact use