An Unbiased View of high efficiency particulate air (hepa) filter
As an instance this, think about that 1 micron is a person-millionth of the meter, which may be about one hundred th the width of a human hair (depending upon the person, not surprisingly). A particle less than 10 microns is invisible towards the bare eye, so You can not particularly begin to see the HEPA filter Doing work.A high efficiency particu