Gordon, William E. Pennsylvania State University, University Park, Pennsylvania.
Last reviewed:August 2019
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- Dry chemical extinguishers
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A device used to put out small fires. Fire extinguishers (see illustration) operate on one or a combination of the following methods: (1) cooling the burning materials; (2) blanketing the fire with inert gas that chokes it for lack of oxygen; (3) introducing materials that inhibit combustion; and (4) covering the burning matter with a blanket or a layer of solid particles that prevent access of air. See also: Fire; Fire technology
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