Design - Calgary, Alberta, Canada
The Corona virus is 0.3 microns, and the filters that we provide filter down to 0.3 microns for particles. I am not saying that these will be 100% effective, as no mask is, but from the research, masks that are made of tightly woven cottons that are layers can be up to approximately between 60% to 70% effective, and with the hepa filter layer, their effectiveness is increased.
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