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What is a HEPA filter, and what is it used for?

If you're shopping for a new air purifier or vacuum cleaner, you'll likely come across the term 'HEPA filter'. HEPA stands for 'high efficiency particulate air' [filter], and it's a standard for ...

Mask Up, Stay Safe: Essential Air Pollution Survival Checklist As AQI Worsens

Use air purifiers when possible. Make sure your air purifier has HEPA filters and no other. Hydrate throughout the day. Aim ...