Capsule FiltersCobetter capsule filters are available in different sizes with effective filtration surface areas ranging from 150 to 1500 cm . Capsules are available with membranes such as PES, nylon, PTFE, PVDF and non-woven polypropylene and glass fiber depth medias. The capsules are available with a variety of end fittings such as stepped hose barbs, tri-clamp(sanitary) and NPT connections. Sterile and non-sterile options are also available.