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The Water Cooler
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Mask Hysteria
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<blockquote data-quote="Dale00" data-source="post: 3402596" data-attributes="member: 688"><p>"How do N95 masks work to filter out particles much smaller than their pore size?"</p><p>Short answer - the particles must take a circuitous path through the filter material. They impact the material and are retained there rather than continuing with the flow of air through the mask. Airborne transmission (same as aerosol transmission) involves the virus being in water droplets less than 5 microns (same as micrometers) - so we are not talking about dry particles bouncing off the filter material components. I posted a detailed link on this in an earlier discussion but cannot find the link...sorry.</p><p>The functional material in the n95 mask is also electrostatic, capturing some particles by electrical attraction.</p></blockquote><p></p>
[QUOTE="Dale00, post: 3402596, member: 688"] "How do N95 masks work to filter out particles much smaller than their pore size?" Short answer - the particles must take a circuitous path through the filter material. They impact the material and are retained there rather than continuing with the flow of air through the mask. Airborne transmission (same as aerosol transmission) involves the virus being in water droplets less than 5 microns (same as micrometers) - so we are not talking about dry particles bouncing off the filter material components. I posted a detailed link on this in an earlier discussion but cannot find the link...sorry. The functional material in the n95 mask is also electrostatic, capturing some particles by electrical attraction. [/QUOTE]
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