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The problem Christman explained that these tiny particulates the scientific community calls them PM2.5 are so small that, when breathed into the lungs, they can cross the blood-air barrier and circulate in the bloodstream, increasing the risk of heart attacks

Science 297 , 259263 (2002)

Its high-performance design ensures the trapping of 99.97% of particles as small as 0.1 microns, creating a cleaner living environment.*Initial efficiency value

Instead of discarding an entire device with a battery and circuit board after each use, you only replace small components like coils or pods, and your main device can last for years