<prompt> Rideal-Walker coefficient is related with ?Disinfecting powerParasitic clearanceDietary requirementStatistical correlation  <response>: Ans. is a i.e., Disinfecting power Traditional testing of disinfectants Two traditional tests for determining the efficiency of disinfectants are :? 1 Rideal-Walker test : Phenol is taken as the standard with unit as phenol coefficient pheno11 2 Chick-Main test : The disinfectant acts in the presence of organic matter dried yeast or feces. 