Aerosol

A suspension in gaseous medium of solid particles, liquid particles or solid and particles having negligible falling velocity.

Air-conditioning

A form of air treatment whereby temperature humidity and air cleanliness are all controlled within limits determined by the requirements of the air-conditioned enclosure.

Algae

A small, usually aquatic, plant which requires light to grow, often found on exposed areas of cooling towers.

Antibodies

Substances in the blood which destroy or neutralise various toxins or components of bacteria knows generally as antigens. The antibodies are formed as a result of the introduction into the body of the antigen to which they are antagonistic as in all infectious diseases

Bacteria

(singular bacterium) a microscopic, unicellular (or more rarely multicellular) organism.

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