that the governor was announcing that "air conditioning filters with a Minimum Efficiency Reporting Value rating capable of filtering COVID-19 particles or similar air exchange measures will be mandatory for large mall reopenings."
All filters can be graded with a minimum efficiency reporting value, or MERV, from 1 to 16. According to the EPA, MERVs "report a filter's ability to capture larger particles between 0.3 and 10 microns." More effective filters receive higher MERV ratings. As a measure to mitigate the risks of the coronavirus, the American Society of Heating, Refrigeration and Air-Conditioning Engineers hasthat, when possible, buildings opt for filtration systems of MERV 13 or higher or upgrade using portable HEPA filtration units.
Davidson said a filter rated a MERV 15 was powerful enough to target the respiratory droplets that serve as COVID-19 carrier particles. That kind of filter would not necessarily capture the COVID-19 virus itself, as it is too small. But it would effectively capture the larger respiratory particles carrying the virus According to the World Health Organization, the evidence indicates that COVID-19 is spread through droplet particles between 5 and 10 microns in diameter.
Guess we better shut down the malls and give all the business to amazon
A: MasksForAll
ประเทศไทย ข่าวล่าสุด, ประเทศไทย หัวข้อข่าว
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แหล่ง: BusinessInsider - 🏆 729. / 51 อ่านเพิ่มเติม »
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