To meet the standard a filter must remove 99 97 of particles in the air that are 0 3 micrometer in size a particularly difficult size to filter.
Portable air filters and covid 19.
Hepa filters are usually more effective with.
Air purifiers with hepa filtration efficiently capture particles the size of and far smaller than the virus that causes covid 19 and many readers have asked whether air purifiers can help.
Air cleaning and filtration can help reduce airborne contaminants including particles containing viruses.
Air cleaners hvac filters and coronavirus covid 19 air cleaners and hvac filters are designed to filter pollutants or contaminants out of the air that passes thru them.