Mi Air Purifier 2S with H13 HEPA

The Mi Air Purifier 2S finally has an H13 HEPA filter! Previously, it's an H11 HEPA filter as shown below:

Oh, and H11 is no longer considered "HEPA" as per a quick Wikipedia search:

"HEPA filters, as defined by the United States Department of Energy (DOE) standard adopted by most American industries, remove at least 99.97% of airborne particles 0.3 micrometers (μm) in diameter. The filter's minimal resistance to airflow, or pressure drop, is usually specified around 300 pascals (0.044 psi) at its nominal volumetric flow rate.[6]" https://en.wikipedia.org/wiki/HEPA


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