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Comparing Defined‐Substrate Coliform Tests for the Detection of Escherichia coli in Water

Covert, Terry C. / Rice, Eugene W. / Johnson, Scott A. / Berman, Donald / Johnson, Clifford H. / Mason, Paralee J.

Two commercially available defined‐substrate coliform tests were compared with EC medium plus 4‐methylumbelliferyl‐β‐D‐glucuronide (MUG) for detecting chlorine‐exposed Escherichia coli in spiked water samples. Statistical analyses of the test results indicated no significant differences in detection of E. coli between the Autoanalysis Colilert test and EC medium with MUG. There were, however, significant differences in detection of E. coli between the ColiQuik test and EC medium with MUG in the free‐chlorine‐exposed pure culture studies and when all the data were combined. All methods were capable of detecting 1 cfu/l00 mL of E. coli.

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Comparing Defined‐Substrate Coliform Tests for the Detection of Escherichia coli in Water

Covert, Terry C. / Rice, Eugene W. / Johnson, Scott A. / Berman, Donald / Johnson, Clifford H. / Mason, Paralee J.

Two commercially available defined‐substrate coliform tests were compared with EC medium plus 4‐methylumbelliferyl‐β‐D‐glucuronide (MUG) for detecting chlorine‐exposed Escherichia coli in spiked water samples. Statistical analyses of the test results indicated no significant differences in detection of E. coli between the Autoanalysis Colilert test and EC medium with MUG. There were, however, significant differences in detection of E. coli between the ColiQuik test and EC medium with MUG in the free‐chlorine‐exposed pure culture studies and when all the data were combined. All methods were capable of detecting 1 cfu/l00 mL of E. coli.

Comparing Defined‐Substrate Coliform Tests for the Detection of Escherichia coli in Water

Covert, Terry C. / Rice, Eugene W. / Johnson, Scott A. / Berman, Donald / Johnson, Clifford H. / Mason, Paralee J.

Two commercially available defined‐substrate coliform tests were compared with EC medium plus 4‐methylumbelliferyl‐β‐D‐glucuronide (MUG) for detecting chlorine‐exposed Escherichia coli in spiked water samples. Statistical analyses of the test results indicated no significant differences in detection of E. coli between the Autoanalysis Colilert test and EC medium with MUG. There were, however, significant differences in detection of E. coli between the ColiQuik test and EC medium with MUG in the free‐chlorine‐exposed pure culture studies and when all the data were combined. All methods were capable of detecting 1 cfu/l00 mL of E. coli.

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Title:

Comparing Defined‐Substrate Coliform Tests for the Detection of Escherichia coli in Water

Contributors:

Covert, Terry C. (author) / Rice, Eugene W. (author) / Johnson, Scott A. (author) / Berman, Donald (author) / Johnson, Clifford H. (author) / Mason, Paralee J. (author)

Published in:

Journal ‐ American Water Works Association ; 84 ; 98-104

Publication date:

1992-05-01

Size:

7 pages

ISSN:

1551-8833 , 0003-150X

DOI:

https://doi.org/10.1002/j.1551-8833.1992.tb07359.x

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

Chemical and Physical Analyses , Research , Escherichia Coli , Performance , Testing , Statistical Analysis , Coliforms

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