A HEPA, activated carbon and pre-filter in one cartridge The heart of an air purifier is its filter system, which removes odours, bacteria and dust particles from the air and has a decisive positive effect on air quality. The 3-stage air filter effectively cleans the ambient air that flows through the air purifier and thereby ensures a pleasant atmosphere in which you can breathe easily. Compact—3 filters in one cartridge for the air purifier UNI_AIR PURIFIER_03 Pre-filter—removes airborne bacteria, fungi and moulds. HEPA filter—removes ultra-fine particles such as mould spores and dust particles. Activated carbon filter—neutralises unpleasant odours such as vinegar or smoke and removes volatile gases and fragrances Lasting—effectively cleans the air for up to 2,200 h