4 ms·
That's correct. HEPA filters anything bigger than 2,5 μm e.g. https://en.wikipedia.org/wiki/Benzopyrene https://en.wikipedia.org/wiki/Benzopyrene and NO2, SO2 e
by ed_balls 8y ago
That's correct. HEPA filters anything bigger than 2,5 μm e.g. https://en.wikipedia.org/wiki/Benzopyrene https://en.wikipedia.org/wiki/Benzopyrene and NO2, SO2 etc. are 1000x smaller.