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The effect of sodium thiosulphate on the coliform and Bacterium coli counts of non-chlorinated water samples

Published online by Cambridge University Press:  15 May 2009

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A quantity of 0.1 ml. of a 3% solution of crystalline sodium thiosulphate in a 6 oz. bottle is sufficient to neutralize up to 5 p.p.m. of residual chlorine; the use of large quantities of thiosulphate is unnecessary, except possibly for some swimming-bath samples. The investigation has shown that this amount of thiosulphate has no significant effect on the coliform or faecal coli content of non-chlorinated water samples during 6 hr. storage at refrigerator temperature. There therefore appears to be no disadvantage in adding this amount of thiosulphate to all water sampling bottles.

Type
Research Article
Information
Journal of Hygiene , Volume 51 , Issue 4 , December 1953 , pp. 572 - 577
Copyright
Copyright © Cambridge University Press 1953

References

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