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The preparation of simulated water samples for the purpose of bacteriological quality control

Published online by Cambridge University Press:  15 May 2009

R. D. Gray  and
G. H. Lowe
R. D. Gray
Affiliation:
Public Health Laboratory, Newport, Gwent
G. H. Lowe
Affiliation:
Public Health Laboratory, Newport, Gwent
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Summary

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As part of the bacteriological quality control programme of the Public Health Laboratory Service, we were asked to investigate the possibility of providing simulated water samples for distribution to the laboratories. For this purpose it was necessary to find some means whereby suspensions of coliform organisms and Escherichia coli could be kept relatively stable in number at room temperature for a period of 7–10 days. This, it was finally found, was best achieved by adding selected strains of the organisms to improved formate lactose glutamate medium (Gray, 1964) without the lactose but with added boric acid to a final concentration of 1·8%.

The procedures adopted in the successful quality control programme are described.

Type
Research Article
Information
Journal of Hygiene , Volume 76 , Issue 1 , February 1976 , pp. 49 - 56
Copyright
Copyright © Cambridge University Press 1976

References

REFERENCES

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