2 ms·
And whether the seal around the HEPA filter that the HEPA filter is put inside is airtight. E.g. I've seen some vacuum cleaners which have HEPA filters reviewe
by jlokier 7y ago
And whether the seal around the HEPA filter that the HEPA filter is put inside is airtight.
E.g. I've seen some vacuum cleaners which have HEPA filters reviewed as a bit useless at filtering because the particles flow through small gaps around the filter.