New air purifier that is charged by sunlight and indoor LED lights protects users from pollutants and airborne diseases
· aol.com · popularity 18/100 · 1 similar story today
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Summary
Air filters and face masks wear out and get replaced. Over time, and faster in humid air, the electric charge that lets them trap the finest dust drains away. A new coated filter can be rinsed clean and recharged with ordinary light. In lab tests, it kept catching more than 99 percent of very fine …
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