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    False Positive Fecal Coliform in Biosolid Samples Assayed using A‐1 Medium

    New search for: Baker, Katherine H.
    New search for: Redmond, Brady
    New search for: Herson, Diane S.

    Two most probable number (MPN) methods—lauryl tryptose broth with Escherichia coli broth confirmation and direct A‐1 broth incubation (A‐1)—were compared for the enumeration of fecal coliform in lime‐treated biosolid. Fecal coliform numbers were significantly higher using the A‐1 method. Analysis of positive A‐1 tubes, however, indicated that a high percentage of these were false positives. Therefore, the use of A‐1 broth for 40 CFR Part 503 Pathogen Reduction (CFR, 1993) compliance testing is not recommended.

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    False Positive Fecal Coliform in Biosolid Samples Assayed using A‐1 Medium

    New search for: Baker, Katherine H.
    New search for: Redmond, Brady
    New search for: Herson, Diane S.

    Two most probable number (MPN) methods—lauryl tryptose broth with Escherichia coli broth confirmation and direct A‐1 broth incubation (A‐1)—were compared for the enumeration of fecal coliform in lime‐treated biosolid. Fecal coliform numbers were significantly higher using the A‐1 method. Analysis of positive A‐1 tubes, however, indicated that a high percentage of these were false positives. Therefore, the use of A‐1 broth for 40 CFR Part 503 Pathogen Reduction (CFR, 1993) compliance testing is not recommended.

    Access

    Check access
    Check availability in my library
    Order at Subito €

    False Positive Fecal Coliform in Biosolid Samples Assayed using A‐1 Medium

    New search for: Baker, Katherine H.
    New search for: Redmond, Brady
    New search for: Herson, Diane S.

    Two most probable number (MPN) methods—lauryl tryptose broth with Escherichia coli broth confirmation and direct A‐1 broth incubation (A‐1)—were compared for the enumeration of fecal coliform in lime‐treated biosolid. Fecal coliform numbers were significantly higher using the A‐1 method. Analysis of positive A‐1 tubes, however, indicated that a high percentage of these were false positives. Therefore, the use of A‐1 broth for 40 CFR Part 503 Pathogen Reduction (CFR, 1993) compliance testing is not recommended.

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    Title:

    False Positive Fecal Coliform in Biosolid Samples Assayed using A‐1 Medium

    Contributors:

    Baker, Katherine H. (author) / Redmond, Brady (author) / Herson, Diane S. (author)

    Published in:

    Water Environment Research ; 77 ; 423-424

    Publication date:

    2005-07-01

    Size:

    2 pages

    ISSN:

    1554-7531 , 1061-4303

    DOI:

    https://doi.org/10.1002/j.1554-7531.2005.tb00302.x

    Type of media:

    Article (Journal)

    Type of material:

    Electronic Resource

    Language:

    English

    Keywords:

    Class A , A‐1 broth , most probable number , fecal coliform , biosolid

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