Recently, PM2.5 (particulate matter with diameter of 2.5 micron or less) has become a major health hazard from the polluted air in many cities in China. The regular gauze masks are used to prevent inhaling the PM2.5 fine particles; however, those masks are not able to filter out the PM2.5 because of the large porosity of the mask materials.
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Roisay Dust Mask with Exhalation Valve Air Filter Mask Unisex Protection Non Woven Fabric Masks for Outdoor Cycling Personal Protective Equipment PM2.5 Disposable Breathable Mouth Mask (10pcs) 5.0 out of 5 stars 1. $25.99$25.99 ($7.37/Ounce) AIRNEX Set of 10 Activated Carbon N99 PM2.5 Filters and 4 Exhaust Valves Replacement fit most Dust and
Ear Loop Pm 2 5 Protection Gauze Mask From Tonton. New Reusable Face Mouth Mask PM2.5 Anti Dust PollutionComfy elastic and wide ear loop lets you wear these masks for long periods of time without irritation. It is suitable for cycling, running, biking, hiking, skiing, woodworking and other outdoor ac
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Vova Men Fashion Black Mask Solid Color PM2.5 Gauze. The dustproof mask can be used for anti dust, anti vehicle exhaust, anti pollen allergy, anti PM2.5 and haze day protection. Easy to wear and they provide a superior level of protection over the paper masks, and Very comfortable for long periods of time. Washable, can be repeatedly used.
KN95 level protection,filtering efficiency up to 95%, PM 2.5 pollution ash. * The production of our masks strictly follows GB2626 2006 (China's KN95 standard). The technical requirements and test methods of GB2626 2006 (China's KN95 standard) are basically consistent with 42 CFR 84 (US standard).
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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
The most common and affordable mask are known that the 3M N95 masks (picture above is for the 3M 9501 model). Despite being very affordable (5 to 6 RMB a piece), the 3M N95 are always among the top performing masks for Particulate Matter (i.e. PM 2.5 Air Pollution). One of the great advantage for the 9501 model is to be foldable, so that you
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