CHLORAMINE treatment has been tried for sterilization of salt water swimming pools along the Atlantic seaboard to eliminate the complaints of patrons concerning the irritation of the throat and eyes by chlorine. These studies were started because of the uncertainty of the effectiveness of chlorine when using salt water with a pH of about 8.0. The following procedure was adopted as the most practical approach to the problem of swimming pool disinfection when the contamination occurs in the presence of the disinfectant.To a series of 250 ml. clear glass stoppered bottles containing 100 ml. of sea water at laboratory temperature was added a variable quantity of ammonium chloride and a measured quantity of chlorine water. After 3 hours of ammonia and chlorine treatment, 10 ml. of each sample was removed for a residual chlorine test.The residual sample in each bottle was then inoculated (contaminated) with exactly 2 ml. of cotton filtered raw sewage. After 2, 5, 15, and 30 minutes contact of the sewage with the treated sea water solution, 10 ml. was transferred with a sterile pipette to a sterile test tube containing a small crystal of
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