Philips unveils air purifiers that filter pollutants, viruses

PHILIPS unveiled two indoor air filters equipped to remove 99.97% of particles as small as 3 nanometers. The US National Center for Biotechnology Information estimates the size of SARS-CoV-2, the virus that causes coronavirus disease 2019 (COVID-19), to be between 0.07 μm to 0.09 μm, or 70–90 nanometers.   “Aerosols can hang around in the air for hours. Portable air filters can […]