C15 capsule filters are made of polytetrafluoroethylene which have excellent resistance to organic and inorganic chemical corrosion properties along with natural hydrophobicity. It can be widely used in sterile ventilation processes such as biotechnology, pharmaceuticals, laboratories etc. It’s easy to use and operate, the lightweight design (only 20g) makes the structure very stable and reliable and will not appear hose bending to adversely affect ventilation.