A KN95 respirator is made of 5 layers (40g moisture proof nonwoven fabric, 25g fusion blown nonwoven fabric, activated carbon nonwoven fabric, 25g fusion blown nonwoven fabric, 40g moisture proof nonwoven fabric) and the main filter in the respirator is the activated carbon nonwoven fabric.
What is an Activated Carbon Filter?
Activated carbon filters are small pieces of carbon, typically in granular or powdered block form, that have been treated to be extremely porous. Vast surface area enables these carbon filters to adsorb exponentially more contaminants and allergens than traditional carbon.
Adsorption is a distinct process where organic compounds in the air or water react chemically with the activated carbon, which causes them to stick to the filter. The more porous the activated carbon is, the more contaminants it will capture. These filters are most notably used to remove hazardous compounds in home air purification systems.
Studies also say that carbon filters present in a respirator may even improve your lung capacity and respiratory muscles, making it a good buy if you live in an extremely polluted city.
What are PM 2.5 particles?
PM2.5 refers to atmospheric particulate matter (PM) that have a diameter of less than 2.5 micrometers, which is about 3% the diameter of a human hair.
Pandemic prevention, textile, mining, construction, iron and steel industries, car body preparation industry, woodworking (except oak, beech and exotic woods), agricultural and horticultural activities, cutting and molding of metals, and more.
Protects against novel coronavirus, virus, bacteria, tuberculosis, dusts, mists and fumes containing calcium carbonate, clay, kaolin, cellulose, cotton, flour, ferrous metals, cement, sodium silicate, sulfur, glass fibers and plastics, hardwood, coal, quartz, nonferrous metals, copper, aluminum, barium, titanium, vanadium, chrome, manganese, molybdenum, vegetal and mineral oils, metal-working fluids (this list is non-exhaustive).
Maximum Usage Level
Can be used in atmospheres containing solid and/or liquid aerosols in concentrations up to 12 (10 in UK, FIN, D, I, S) x WEL*: KN95 class (average toxicity). “NR” (Non-Reusable) marked, it can be used one single shift (according to GB2626-2006, similar to EN 149:2001+A1:2009). Certain restrictions or limitations may apply in the case of specific contaminants. Please refer to applicable health and safety standards.
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