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phenol coefficient test

phenol coefficient test
A test to measure the effectiveness of disinfectants by comparing their activity against test bacteria with that of phenol.

Microbiology. . 2009.

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  • phenol coefficient — n a number relating the germicidal efficiency of a compound to phenol regarded as having an arbitrarily assigned value of 1 toward specified bacteria (as typhoid bacteria) under specified conditions * * * a measure of the bactericidal activity of …   Medical dictionary

  • Phenol coefficient — is a measure of the bactericidal activity of a chemical compound in relation to phenol. When listed numerically, the figure expressing the disinfecting power of a substance by relating it to the disinfecting power of phenol may be a function of… …   Wikipedia

  • Rideal-Walker coefficient — The Rideal Walker coefficient is a figure expressing the disinfecting power of any substance and is obtained by dividing the figure indicating the degree of dilution of the disinfectant that kills a microorganism in a given time by that… …   Wikipedia

  • Rideal-Walker test — Ri·de·al Walk·er test ri dē(ə)l wȯ kər n a test for determining the phenol coefficient esp. of a disinfectant Rideal Samuel (1863 1929), and Walker J. T. Ainslie (1868 1930) British chemists. Rideal taught chemistry and was an expert on the… …   Medical dictionary

  • rideal-walker test — rə̇ˈdē(ə)lˈwȯkə(r) noun Usage: usually capitalized R&W Etymology: after Samuel Rideal died 1929 & J.T.A.Walker English chemists : a test for determining the phenol coefficient especially of a disinfectant …   Useful english dictionary

  • Disinfectant — This article is about antimicrobial agents. For the Macintosh anti virus software, see Disinfectant (software). Disinfection of a floor using disinfectant liquid applied using a mop Disinfectants are substances that are applied to non living… …   Wikipedia

  • Quantification of nucleic acids — is commonly used in molecular biology to determine the concentrations of DNA or RNA present in a mixture, as subsequent reactions or protocols using a nucleic acid sample often require particular amounts for optimum performance. There exist… …   Wikipedia

  • Nucleic acid quantitation — In molecular biology, quantitation of nucleic acids is commonly performed to determine the average concentrations of DNA or RNA present in a mixture, as well as their purity. Reactions that use nucleic acids often require particular amounts and… …   Wikipedia

  • Rideal–Walker — (rɪˌdiːl ˈwɔːkə(r)) [f. the names of Samuel Rideal (1863–1929) and J. T. Ainslie Walker (1868–1930), English chemists, who described the test in 1903 (Jrnl. R. Sanitary Inst. XXIV. 424).] Rideal–Walker method or Rideal–Walker test, a procedure… …   Useful english dictionary

  • Indicateur De PH — Note : le terme « indicateur coloré » désignera toujours un « indicateur coloré de pH » dans cet article Quelques indicateurs colorés de pH …   Wikipédia en Français