Particulates in your air
Particulates are solid or liquid matter with aerodynamic diameters ranging from .005 to 100um. Dusts, fumes, smoke and organisms such as viruses, pollen grains, bacteria and fungal spores are solid particulate matter, whereas mists and fog are liquid particulate matter. Indoor particles come from both indoor and outdoor sources and can be drawn into the building via infiltration and outdoor air intakes. Fibres, synthetic or natural, are also classified as particulates.
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