High efficiency particulate air filter (HEPA) is one of the most popular technologies used in air purification. The standard HEPA filter can absorb 99.7% of the suspended particles of 0.3 microns in size (0.3 microns is the most difficult to filter), but its wind resistance is relatively large, and it is generally rarely used in air purifiers. Actual air purifiers Is the HEPA declared by the manufacturer actually HEPA? Its filtration efficiency is slightly lower than HEPA, and the wind resistance is relatively low. Whether it is the real HEPA or the publicized HEPA, it makes the inhaled air fresher and cleaner. The filter absorbs chemical smoke, bacteria, dust particles, and pollen. After being filtered by the air purifier, there are no such pollutants in the air.
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