Mechanical Foam for Fighting Petrol Fires

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FOAM for dealing with petrol fires can be generated in two ways : by chemical reaction (chemical foam), or by mechanical agitation (mechanical or air foam). Mechanical foam is largely used in Great Britain and is produced by churning up air and water with a foam-stabilizing agent, such as saponin or soap. The foam-making branch pipe is the apparatus in general use by fire services.

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WEINTROUB, S. Mechanical Foam for Fighting Petrol Fires. Nature 162, 158 (1948) doi:10.1038/162158a0

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