A Method of Destroying Or Preventing the Growth of Alg And Certain Pathogenic
A Method of Destroying Or Preventing the Growth of Alg And Certain Pathogenic
George Thomas Moore
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Nearly every known substance has been tested, but the high concentrations required to produce the desired effect, the extreme toxicity of the agents, their cost, or the difficulty of application, have eliminated all but copper sulphate as a possibility for the present purpose. According to Semmer and Krajewski, a a 1 to 160 solution of this salt will inhibit action in infected blood, and septic bacteria can be destroyed with a 10 per cent solution. Bolton b says that 1 to 500 is toxic, but 1 to... 1, 000 permits the growth of cholera; 1 to 200 and 1 to 500, respectively, produce the same results with typhoid, and some of the spore-bearing forms are unaffected at 2 per cent. Green c gives 2J per cent as the amount necessary to kill typhoid in two to twenty-four hours, and finds cholera only slightly less sensitive. Israel and Klingman, ^ however, find that almost infinitesimal amounts of copper in colloidal solution are fatal to typhoid, cholera, and Bacillus coli. There is considerable literature upon the use of copper sulphate as a disinfectant for clothing, bed- ding, cesspools, etc.
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