Captures ultrafine particles from the air including pollen bacteria and pet dander right down to 01 microns tris impregnated graphite crystals capture more odours domestic fumes and gases such as formaldehyde in warmer weather a powerful stream of purified airflow can cool you down automatically monitors reacts and purifies then reports air quality to your dyson link app monitors and responds to indoor air quality adjusting airflow automatically monitors reacts and purifies whi