• EN ISO 21187:2005

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

    Milk - Quantitative determination of bacteriological quality - Guidance for establishing and verifying a conversion relationship between routine method results and anchor method results (ISO 21187:2004)

    Available format(s): 

    Superseded date:  19-03-2021

    Language(s): 

    Published date:  19-10-2005

    Publisher:  Comite Europeen de Normalisation

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    Table of Contents - (Show below) - (Hide below)

    Foreword
    Introduction
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Principles
      4.1 Prerequisites
      4.2 Organizational set-up
    5 Establishing a conversion relationship
      5.1 Consideration of influencing factors
          and their consequences
      5.2 Test samples
      5.3 Pretreatment of test samples
      5.4 Analysis
      5.5 Calculation
      5.6 Expression of results
    6 Verification of a conversion relationship
      6.1 Frequency of verification
      6.2 Test samples
      6.3 Pretreatment of test samples
      6.4 Analysis
      6.5 Calculation and verification of a
          conversion relationship
    7 Test report
    Annex A (informative) Number of samples for
                          linear regression
    Bibliography

    Abstract - (Show below) - (Hide below)

    ISO 21187|IDF 196:2004 gives guidelines for the establishment of a conversion relationship between the results of a routine method and an anchor method, and its verification for the quantitative determination of the bacteriological quality of milk.

    General Product Information - (Show below) - (Hide below)

    Committee CEN/TC 302
    Document Type Standard
    Publisher Comite Europeen de Normalisation
    Status Superseded
    Superseded By

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

    ISO/IEC 17025:2005 General requirements for the competence of testing and calibration laboratories
    ISO 11095:1996 Linear calibration using reference materials
    ISO 16140:2003 Microbiology of food and animal feeding stuffs Protocol for the validation of alternative methods
    ISO 8196-2:2009 Milk — Definition and evaluation of the overall accuracy of alternative methods of milk analysis — Part 2: Calibration and quality control in the dairy laboratory
    ISO 8196-1:2009 Milk — Definition and evaluation of the overall accuracy of alternative methods of milk analysis — Part 1: Analytical attributes of alternative methods
    ISO 3534-1:2006 Statistics — Vocabulary and symbols — Part 1: General statistical terms and terms used in probability
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