| 单词 |
Rideal–Walker |
| 释义 |
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 for determining the germicidal efficiencies of disinfectants relative to phenol as a standard; hence Rideal–Walker coefficient, a measure of germicidal efficiency obtained by this method.
1907Jrnl. R. Sanitary Inst. XXVIII. 379 He wished to draw attention to a few points..in connection with the practical details of the Rideal–Walker method of standardisation of disinfectants. 1919Jrnl. State Med. XXVII. 62 The Rideal–Walker test..is difficult in execution on account of the attempt to include in one test all the variable factors. 1940Thorpe's Dict. Appl. Chem. (ed. 4) IV. 32/1 The Rideal–Walker coefficient is obtained by dividing that dilution of the disinfectant which shows life in 2½ and 5 minutes, but no life thereafter, by that dilution of carbolic acid..which shows life in 2½ and 5 minutes, but no life thereafter. 1965Turk & Porter Short Textbk. Microbiol. v. 27 The Rideal–Walker coefficient was at one time widely used as a measure of the potency of an antiseptic. 1971H. Chick et al. War on Dis. ix. 89 The errors in the Rideal–Walker test were avoided by the modifications introduced in the Chick–Martin technique. |
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单词 ridel 释义 ▪ I. ridel, riddel, n. Now only arch.Forms: . 4 rudel, 4–5 ridel(le, ryd......