Readings of PM2.5 are usually included in the air quality reports of environmental protection departments and companies. Find out what they mean and why you should monitor their level.
PM2.5 refers to atmospheric particles with a diameter of less than 2.5 microns, which is about 3% of the diameter of human hair.
There are dozens of air purifiers there selling some different or other. Every company positions its products as the best. These specifications may seem daunting and confusing, but it's important to consider the details, because let's face it, air purifiers are not cheap.
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