I’m wondering how effective a #4 Melitta coffee filter would be.
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Probably not very.
I think some sort of filter was on the filtration chart, but not sure if there was a coffee filter.
“I’m wondering how effective a #4 Melitta coffee filter would be.”
Holes are too large, but apparently HEPA filters are good enough.
CV is .12 microns or so, holes in coffee filters tend to be a lot bigger. On the other hand, those CVs don’t usually fly around on their own, they live on droplets which makes the whole package bigger.