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Nov 27, 2015 · 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. PM2.5 is comparatively much smaller in ...

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New Listing Reusable Sport Mouth Mask With Breath valve 10PC Activated Carbon Filters Pad. Brand New. $27.89. From China. Buy It Now. Free Shipping. 7+ watchers. Filtrete 1900 Premium Face mask filters, MERV 13, 10 Pcs Size 6"x4.5" Brand New. $15.00. Save up to 10% when you buy more. or Best Offer +$3.50 shipping. Watch. New Listing Reusable ...

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Understanding PM2.5 - Cambridge Mask Co

Nov 27, 2015 · 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. PM2.5 is comparatively much smaller in ...

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Windproof Mask with 2 Activated Carbon Filters French Bulldog Pet Reusable Adjustable Face Mask Dustproof for Daily Outdoor Activities price £ 8 . 68 NA Funny Football Baseball Sports Art Print Face Mask Dustproof Soft Face Mask Elastic Ear Hook for Women Men

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