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Medical Term:

Rideal-Walker coefficient

Pronunciation: rid'e-al wah'ker


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 that kills the organism in the same space of time under similar conditions.

Synonym(s): hygienic laboratory coefficient, phenol coefficient

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