Moonbow by Hindware AP-A8400UIN 55-Watt Air Purifier (White) Moonbow Air Purifier’s Puri 5 Technology is a 5 Stage Filtration process that cleans air by eliminating up to 99.985% of pollutants from the air in your house. First, pre-filters obstruct big particles, like visible dust, human hair, etc. A True HEPA filter then traps air-borne contaminants and allergens that are as little as 0.3 microns. An activated-carbon filter removes odours and VOCs in the third stage. After that, a UV lamp gets rid of microorganisms, such as germs, bacteria, fungi and viruses. Lastly, refreshing energizers create negative ions that ensure the air in your home is nature-fresh