3 ms·
Well, given that virus particles start to be meaningfully filtered only at a certain MERV level (14?), that upgrade may in fact have been more than a "minor sym
by Der_Einzige 5y ago
Well, given that virus particles start to be meaningfully filtered only at a certain MERV level (14?), that upgrade may in fact have been more than a "minor symbolic" gesture.
- mlyle 5y agoMERV-13 is pretty good. Better than 90% filtration at 1 micrometer and up. It then comes down to how many air changes you can expect.
- marcosdumay 5y ago> Better than 90% filtration at 1 micrometer and up. What means it's probably useless against any airbone virus. But it's pretty great against particle pollution, in case you want to use it in a private space.
- mlyle 5y agoViruses don't circulate bare in the air. Droplets containing viruses do. It's thought that it's mostly carried within droplets that are 5um or larger. Just in case smaller particles have a substantial role, I quoted the 1um number.
- PaulDavisThe1st 5y agoVirus size is not the correct metric for a virus transmitted in aerosolized or droplet form (notably, COVID19). What matters is the aerosol/droplet size, which in this case is substantially above 1 micrometer.