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A minerals-modified glutamate medium for the enumeration of coliform organisms in water

Published online by Cambridge University Press:  15 May 2009

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Oxoid dehydrated MacConkey broth was compared with laboratory-prepared Gray's improved formate lactose glutamate medium and with two dehydrated versions of it, by participants in ten laboratories. A variety of chlorinated and unchlorinated water samples was used. The superiority of the glutamate media over MacConkey broth for the detection of coliform organisms in water was again confirmed. The minerals-modified version, either dehydrated or laboratory-prepared, gave the best results and is the medium recommended for use in water examination. Care should be taken to ensure that the final pH after sterilization is 6·7.

Type
Research Article
Information
Journal of Hygiene , Volume 67 , Issue 2 , June 1969 , pp. 367 - 374
Copyright
Copyright © Cambridge University Press 1969

References

REFERENCES

Gray, R. D. (1964). An improved formate lactose glutamate medium for the detection of Escherichia coli and other coliform organisms in water. J. Hyg. Camb. 62, 495–508.Google ScholarPubMed
Public Health Laboratory Service Standing Committee on The Bacteriological Examination of Water Supplies (1968). Comparison of MacConkey broth, Teepol broth and glutamic acid media for the enumeration of coliform organisms in water. J. Hyg., Camb. 66, 67–82.CrossRefGoogle Scholar
Windle Taylor, E. (1965–1966). Progress with glutamic acid media. Rep. Results chem. bact. Exam. Lond. Wat. 42, 11–14.Google Scholar