The Aervent-50 is manufactured by Merck Millipore. It is a capsule filter with a capacity of 0.2 µm. The capsule filter has an Aervent PTFE membrane with a size of 50 mm. It is designed for use in small scale gas line, as well as for air venting. It provides high flow rates and throughput. The Aervent-50 is flexible and can be used for many chemical substances.