Filson hydrophobic PTFE membrane filter is totally fabricated with pure PTFE membrane, and one outstanding characteristic of our filter is excellent chemical compatibility. Therefore, Filson hydrophobic PTFE membrane filter has better compatibility with high corrosion, acid and organic solvents. Owing to the superior hydrophobicity and air permeability, Filson hydrophobic PTFE membrane filter is best suitable for venting, air and gas filtration.