论文信息 - NUMBERS OF ENTEROCOCCI IN WATER, SEWAGE, AND FECES DETERMINED BY THE MEMBRANE FILTER TECHNIQUE WITH AN IMPROVED MEDIUM

NUMBERS OF ENTEROCOCCI IN WATER, SEWAGE, AND FECES DETERMINED BY THE MEMBRANE FILTER TECHNIQUE WITH AN IMPROVED MEDIUM

In a previous report from this laboratory (Slanetz et al., 1955), a highly selective medium was described for use with membrane filters in the enumeration of enterococci or fecal streptococci in water. Higher counts for enterococci were generally obtained with this procedure than with other methods described. The technique afforded a relatively simple and direct means for the determination of numbers of enterococci in water, sewage, or other materials. After studies of the effects of various amounts and combinations of peptones and other ingredients in media for the cultivation of enterococci on the membrane filters, it became evident that improvements could be made. As a result, a new medium has been formulated. The composition and efficiency of this medium are described.

L W SLANETZ | C H BARTLEY | C. Bartley | L. W. Slanetz

[1] R. France,et al. A Comparison of the Most Probable Numbers of Coliform Bacteria and Enterococci in Raw Sewage , 1953, Applied microbiology.

[2] J. J. Hinman. Standard Methods for the Examination of Water, Sewage, and Industrial Wastes , 1955 .

[3] L. A. Allen,et al. Improved methods for determining the most probable number of Bacterium coli and of Streptococcus faecalis , 1953, Epidemiology and Infection.

[4] W. L. Mallmann,et al. Comparison of the most probable numbers of Escherichia coli and enterococci in river waters. , 1955, American journal of public health and the nation's health.

[5] C. Bartley,et al. Evaluation of membrane filters for the determination of numbers of coliform bacteria in water. , 1955, Applied microbiology.

[6] C. Bartley,et al. Use of the membrane filter technique to enumerate enterococci in water. , 1955, Public health reports.

[7] W. L. Mallmann,et al. A new medium for the detection of enterococci in water. , 1953, American journal of public health and the nation's health.

[8] L. A. Allen,et al. Enumeration of Streptococcus faecalis, with particular reference to polluted waters , 1953, Epidemiology and Infection.