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    4. what is hepa filter?
    what is hepa filter?

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    0  Views: 519 Answers: 1 Posted: 14 years ago
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      HEPA (High-Efficiency Particulate Air) filter is an air filter, which is designed to remove  at least 99.97% of dust, pollen, mold, bacteria and any air particles with a size of 0.3 micrometres (μm) or more at 85 litres of air per minute (Lpm) that are passed through it.

      13 years ago. Rating: 0
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