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Rideal-walker method

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Rideal-Walker method --> Rideal-Walker coefficient

A figure expressing the disinfecting power of any substance; it is obtained by dividing the figure indicating the degree of dilution of the disinfectant that kills a microorganism in a given time by that indicating the degree of dilution of phenol which kills the organism in the same space of time under similar conditions.

Synonym: hygienic laboratory coefficient, phenol coefficient.