3M P100 filter cartridge

Pore size is not the only characteristic for removing viruses. It could also use elecrostatic charge to remove wuhan coronavirus too. This might work; but like you said, it is not clear from the product description. //@Anonymous: This filter is for removing volatile organics. Without the pore size information you cannot say anything about virus removal performance. It may even be worse than just regular fabric. Who knows. The mechanism for removing volatile organics is adsorption/absorption (this filter is made for) while to block virus, you basically need pore size smaller than the virus. The pore size is not given in the product info. Don't get misleaded because the specifications have long list of things get removed with this filter. But the listed things removed had nothing common with a virus. It may or or may not remove viruses. The price is just the filter replacement. It gets expensive with the face mask. I am more scared of people getting false security and becoming more vulnerable

Covid-19 Proof?

This filter is for removing volatile organics. Without the pore size information you cannot say anything about virus removal performance. It may even be worse than just regular fabric. Who knows. The mechanism for removing volatile organics is adsorption/absorption (this filter is made for) while to block virus, you basically need pore size smaller than the virus. The pore size is not given in the product info. Don't get misleaded because the specifications have long list of things get removed with this filter. But the listed things removed had nothing common with a virus. It may or or may not remove viruses. The price is just the filter replacement. It gets expensive with the face mask. I am more scared of people getting false security and becoming more vulnerable