HEPA is an acronym of High
Efficient Particulate Air.
To qualify as
true HEPA by US government standards,
an air filter
must remove 99.97% of all particles greater than 0.3 micrometer from the air
that passes through.
(Particles
smaller than 0.3 microns are still trapped by HEPA filters but effectiveness is
reduced to less than 99.97%.)
Hepa air purifier help you stay in
good quality air.
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