This blog is a work in progress. However, I wanted to publish the graph quickly as it is today in order to allow more people to understand the air filtration capabilities and limitations of commercially available air purifiers.  This chart currently only represents the capacity of mechanical filtration filters.

PM10 is inhalable (generally reaches as far as the bronchi).

PM2.5 is respirable (reaches the bloodstream, tissues & internal organs)
Nanoparticles can penetrate the blood/brain barrier. We have millions of nanoparticles entering our bodies each day. The average diesel exhaust soot particle is nanoparticle in size at 100 nanometers or 0.1µm

 

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