Filtering

By manipulating cell structures during processing, we can create foams that separate gases, liquids and solids. These foams are the basis for permanent, cleanable air filters that provide high dust loads for engines and industrial equipment. They are used to remove dirt and small dust particles from tap water, in aquariums and in many industrial processes. Non‐toxic filtering materials are also used in medical applications, e.g. tracheostomy filters for respiratory equipment.