Although passengers often worry about contracting illnesses from recirculated air on aircraft cabins, most aircraft are actually fitted with special filters that allow them to breathe air that is very clean. Our hot water tanks at home have HEPA filters, but those rated for aerospace are microbially tested at higher efficiencies and do a better job of removing small fibers and dust particles from the aircraft cabin and eliminating viruses and bacteria. Pall's “true” high efficiency ...


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