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Water quality control trials: statistical tables for direct comparison between membrane filtration bacterial counts and the multiple tube method with a description of the bacteriological method

Published online by Cambridge University Press:  15 May 2009

Hilary E. Tillett ,
A. E. Wright  and
Sheila Eaton
Hilary E. Tillett
Affiliation:
Public Health Laboratory Service, Communicable Disease Surveillance Centre, 61 Colindale Avenue, London NW9 5EQ.
A. E. Wright
Affiliation:
Regional Public Health Laboratory, Newcastle upon Tyne.
Sheila Eaton
Affiliation:
Regional Public Health Laboratory, Newcastle upon Tyne.
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Summary

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Experiments in the quality control of water samples are being conducted in the Public Health Laboratory Service and the water industry in the United Kingdom. The number of distributions which have been made is 7 and 92 laboratories are now participating. The methods used for preparing and distributing samples are described. Some participating laboratories use the multiple tube method and some use membrane filtration to assess the presence of coliforms and Escherichia coli. The results are, therefore, a mixture of estimated numbers and direct colony counts.

Type
Research Article
Information
Epidemiology & Infection , Volume 101 , Issue 2 , October 1988 , pp. 361 - 366
Copyright
Copyright © Cambridge University Press 1988

References

Gray, R. D. & Lowe, G. H. (1976). The preparation of simulated water samples for the purpose of bacteriological quality control. Journal of Hygiene 76, 49–56.CrossRefGoogle ScholarPubMed
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Tillett, H. E. (1986). Reporting Bacteriological Counts from Water Samples. Proceedings of International Workshop on Statistical Aspects of Water Quality, Burlington, Canada, 1985 (ed. El-Shaarawi, E. & Kwiatkowski, R. E.). Elsevier Science Publishers B.V.Google Scholar
Tillett, H. E. & Coleman, R. (1985). Estimated numbers of bacteria in samples from non-homogeneous bodies of water: how should MPN and membrane filtration results be reported? Journal of Applied Bacteriology 59. 381–388.CrossRefGoogle Scholar