Nov 27, 2015 · 1) Why is it called 2.5? The ‘2.5’ in PM 2.5 refers to the size of the pollutant in micrometers. Additionally, particulate pollutants vary in size and the smaller they are, the more damage they cause to your health. PM10 is particulates that have a diameter of 10 micrometers or less. Dust particles are the main source of PM10.
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Can wearing a medical face mask protect you against the new coronavirus? He noted that some people wear surgical masks because they are sick with a cold or the flu and they don't want to get
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Apr 04, 2020 · 8. Muryobao Military Grade N99 Dust Mask. 9. Debrief Me Anti-dust Mask. 10. Crosman Dustproof Mask. What is a Dust Mask. How Does It Work. Types of Dust Mask. Why Do You Need to Wear Dust Masks. Care and Maintenance. Frequently Asked Questions. Best Dust Mask Reviews of 2020. 1. 3M 8511PB1-A-PS Particulate N95 Mask.
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