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Fine liquid or solid particles suspended in air. For example Fog or Smoke. They can be microscopic and less than 1 micron in size. They can chemical or biological and composed of many parts.

The Camfil air cleaner typically uses HEPA class filtration to remove ultra-fine airborne particles from the air in a room that may be bacteria or virus and cause infection or chemically toxic when inhaled. It would be used in industrial applications. Camfil 2000 and 6000 models are of this type.

The Camfil air purifier uses typically uses HEPA class filtration to remove ultra-fine airborne particles from the air in a room but also has molecular filtration to remove odours and selected noxious gases and fully clean the air. It would be used in office, light industrial and residential applications. Camfil City M 300 and 800 Models are of thi [..]

Airborne contaminant that can induce an extreme reaction in a person who has an allergy to that substance. Typical Allergens are pollen, animal hair, skin particles and bed-mites and can be inhaled or just have skin contact. Anti-Histamines are the usual medication.

An index published usually on a daily basis to advise on how much airborne pollution is being monitored and what effect this will have on public health. Commonly experienced outdoor problem pollutants are PM2.5 fine combustion particulates, Nitrogen oxides (NOx), Ozone and Sulphur oxides (SOx). Others that may be experienced are Volatile Organic Co [..]

American Society of Heating, Refrigeration and Air Conditioning Engineers who produce comprehensive guidance on air cleaning plant.

A respiratory complaint that can be serious in young and older people and is the result of allergens sometimes airborne causing irritation and swelling in the respiratory system. In extreme cases it can lead to increased chance of mortality.

Single-celled organisms that quickly multiply through cell division. Harmful bacteria called pathogens can cause disease, others can be beneficial to humans, animals and plants.

Single-celled organisms that quickly multiply through cell division. Harmful bacteria called pathogens can cause disease, others can be beneficial to humans, animals and plants.