The Medisana Air filter for the Medisana Air room air purifier is an antibacterial fine dust filter from 3M with additional activated carbon filtration. The fine dust filter is assigned to filter class F9 and can filter particles up to a size of 2.5 micrometers out of the air. The Medisana Air Filter has three room air filter functions. The integrated fine dust filter removes fine dust, dust, spores and pollen from the air. The antibacterial filter eliminates viruses and bacteria. The activated carbon filter neutralises odours.