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    AS/NZS 4276.3.2:2003

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    Water microbiology Heterotrophic colony count methods - Plate count of water containing biocides

    Available format(s):  Hardcopy, PDF 1 User, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Superseded date:  03-03-2021

    Language(s):  English

    Published date:  17-03-2003

    Publisher:  Standards Australia

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    Abstract - (Show below) - (Hide below)

    This Standard sets out a method for estimating the number of colony-forming units (CFUs) in water using a pour plate technique and R2A Agar. For waters which may contain growth-inhibiting additives which have not been neutralized, plate counts starting with the 1:100 dilution are recommended in order to eliminate interference with counts. This increases the lower detection limit of the method to 100 cfu/mL. This limit is generally adequate for applications such as the monitoring of cooling tower water.

    Scope - (Show below) - (Hide below)

    This Standard sets out a method for estimating the number of colony-forming units (CFUs) in water using a pour plate technique and R2A Agar. For waters which may contain growth-inhibiting additives which have not been neutralized, plate counts starting with the 1:100 dilution are recommended in order to eliminate interference with counts. This increases the lower detection limit of the method to 100 cfu/mL. This limit is generally adequate for applications such as the monitoring of cooling tower water.

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    Committee FT-020
    Document Type Standard
    Product Note This standard has been reconfirmed in Australia in 2013 and remains current in New Zealand. Reconfirmation Notice 05-12-2013
    Publisher Standards Australia
    Status Superseded
    Superseded By
    Supersedes
    Under Revision

    History - (Show below) - (Hide below)

    First published as AS/NZS 4276.3.2:2003.Reconfirmed 2013. First published as AS/NZS 4276.3.2:2003.

    Standards Referenced By This Book - (Show below) - (Hide below)

    AS 4276.1-1995 Water microbiology General information and procedures
    AS 4276.2-1995 Water microbiology Culture media, diluents and reagents (Reconfirmed 2013)

    Standards Referencing This Book - (Show below) - (Hide below)

    AS/NZS 3666.3:2011 Air-handling and water systems of buildings - Microbial control Performance-based maintenance of cooling water systems
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