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  • DIN EN ISO 20483 E : 2014

    Current The latest, up-to-date edition.

    CEREALS AND PULSES - DETERMINATION OF THE NITROGEN CONTENT AND CALCULATION OF THE CRUDE PROTEIN CONTENT - KJELDAHL METHOD (ISO 20483:2013)

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  01-01-2014

    Publisher:  German Institute for Standardisation (Deutsches Institut für Normung)

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

    National foreword
    National Annex NA (informative) - Bibliography
    Foreword
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Principle
    5 Reagents
    6 Apparatus
    7 Sampling
    8 Preparation of test sample
    9 Determination of the moisture content
    10 Procedure
    11 Expression of results
    12 Precision
    13 Test report
    Annex A (informative) - Results of interlaboratory tests
    Annex B (informative) - Critical difference and practical
            application of the repeatability and reproducibility
            limits to different protein contents
            protein contents
    Annex C (informative) - Factors for converting nitrogen
            content to protein content
    Bibliography

    Abstract - (Show below) - (Hide below)

    Defines a method for the determination of the nitrogen content of cereals, pulses and derived products, according to the Kjeldahl method, and a method for calculating the crude protein content.

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

    Document Type Standard
    Publisher German Institute for Standardisation (Deutsches Institut für Normung)
    Status Current

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

    DIN EN 15948:2015-06 CEREALS - DETERMINATION OF MOISTURE AND PROTEIN - METHOD USING NEAR-INFRARED-SPECTROSCOPY IN WHOLE KERNELS

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

    ISO 1871:2009 Food and feed products General guidelines for the determination of nitrogen by the Kjeldahl method
    ISO 5983-1:2005 Animal feeding stuffs Determination of nitrogen content and calculation of crude protein content Part 1: Kjeldahl method
    DIN ISO 5725-2:2002-12 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 (ISO 5725-2:1994 including Technical Corrigendum 1:2002)
    DIN EN ISO 712 E : 2010 CEREALS AND CEREAL PRODUCTS - DETERMINATION OF MOISTURE CONTENT - REFERENCE METHOD
    ISO 3188:1978 Starches and derived products — Determination of nitrogen content by the Kjeldahl method — Titrimetric method
    DIN ISO 5725-6:2002-08 ACCURACY (TRUENESS AND PRECISION) OF MEASUREMENT METHODS AND RESULTS - PART 6: USE IN PRACTICE OF ACCURACY VALUES
    DIN ISO 5725-3:2003-02 ACCURACY (TRUENESS AND PRECISION) OF MEASUREMENT METHODS AND RESULTS - PART 3: INTERMEDIATE MEASURES OF THE PRECISION OF A STANDARD MEASUREMENT METHOD
    ISO 712:2009 Cereals and cereal products — Determination of moisture content — Reference method
    ISO 5725-3:1994 Accuracy (trueness and precision) of measurement methods and results — Part 3: Intermediate measures of the precision of a standard measurement method
    ISO 5725-6:1994 Accuracy (trueness and precision) of measurement methods and results — Part 6: Use in practice of accuracy values
    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
    ISO 6540:1980 Maize Determination of moisture content (on milled grains and on whole grains)
    ISO 24333:2009 Cereals and cereal products — Sampling
    ISO 24557:2009 Pulses Determination of moisture content Air-oven method
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