The BioGS HEPA filter traps common allergens1 and bacteria2 and inhibits the growth of odor causing bacteria and mold on the filter media8 to support optimum filter efficiency and prolong filter life. Unlike traditional HEPA filters which could allow bacteria and virus to grow over time.
 
One of the MinusA2's unique features is the ability to customize the filtration to target your specific concerns. Customized filter is one of the five filters in the MinusA2 air purifier. This bonus layer of protection enhances the cleaning power of your targeted pollutants. Each customized filter has a different proprietary coating or structure which helps target specific allergens or concerns.