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  • DD ISO/TS 17837:2008

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    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    Milk and milk products. Determination of nitrogen content and crude protein calculation. Kjeldahl method

    Available format(s):  Hardcopy, PDF

    Superseded date:  28-02-2014

    Language(s):  English

    Published date:  31-12-2008

    Publisher:  British Standards Institution

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

    Foreword
    Foreword
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Principle
    5 Reagents
    6 Apparatus
    7 Sampling
    8 Preparation of the test sample
       8.1 Cheese
       8.2 Milk
    9 Procedure
       9.1 Traditional method
       9.2 Block digestion method
       9.3 Blank test
       9.4 Recovery tests
    10 Calculation and expression of results
       10.1 Calculation
       10.2 Expression of results
    11 Precision
       11.1 Interlaboratory test
    12 Test report
    Annex A (informative) - Interlaboratory trial
    Bibliography

    Abstract - (Show below) - (Hide below)

    Defines a method for the determination of the nitrogen content and crude protein content by calculation in milk and milk products by using the Kjeldahl principle, both traditional and block digestion methods.

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

    Committee AW/5
    Document Type Standard
    Publisher British Standards Institution
    Revision Of
    Status Superseded
    Superseded By

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

    ISO 5725-1:1994 Accuracy (trueness and precision) of measurement methods and results — Part 1: General principles and definitions
    ISO 385:2005 Laboratory glassware Burettes
    ISO 707:2008 Milk and milk products — Guidance on sampling
    ISO 1042:1998 Laboratory glassware One-mark volumetric flasks
    ISO 4788:2005 Laboratory glassware Graduated measuring cylinders
    ISO 5725-2:1994 Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method
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