PATHOGENS IMMUNE TO CHLORINE. “Lakay et al. obtained only a partial elimination of Microthrix parvicella bacteria at a high chlorine dose. Hwang and Tanaka found in batch tests that M. parvicella remained intact at very high chlorine doses. More recently, Madoni et al. reported in a survey in Italy that use of chlorination was successful in only 63% of the cases.”
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