Rideal-Walker Coefficient is employed for the assessment of

RWC Also known as ‘Carbolic acid coefficient’. Is used to ‘represent germicidal power of a disinfectant’. Standard used for comparison: Phenol (RWC = 1.) RWC = 10 implies: Given disinfectant is 10 times more potent than phenol. Organism used for testing: Salmonella typhi 210 In presence of organic matter, RWC is ineffective: Chic Martin test is employed