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  • DIN EN ISO 16634-1:2009-07

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    FOOD PRODUCTS - DETERMINATION OF THE TOTAL NITROGEN CONTENT BY COMBUSTION ACCORDING TO THE DUMAS PRINCIPLE AND CALCULATION OF THE CRUDE PROTEIN CONTENT - PART 1: OILSEEDS AND ANIMAL FEEDING STUFFS

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  01-01-2009

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

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

    Vorwort
    Einleitung
    1 Anwendungsbereich
    2 Normative Verweisungen
    3 Begriffe
    4 Kurzbeschreibung
    5 Reagenzien
    6 Prüfeinrichtung
    7 Probenahme
    8 Herstellung der Untersuchungsprobe
    9 Durchführung
       9.1 Allgemeines
       9.2 Einwaage
       9.3 Steuerung des Sauerstoffbedarfs
       9.4 Kalibrierung
       9.5 Bestimmung
       9.6 Nachweis und Auswertung
    10 Berechnung und Angabe der Ergebnisse
       10.1 Berechnung
            10.1.1 Stickstoffgehalt
            10.1.2 Rohproteingehalt
       10.2 Angabe der Ergebnisse
    11 Präzision
       11.1 Ringversuche
       11.2 Wiederholpräzision
       11.3 Vergleichpräzision
    12 Prüfbericht
    Anhang A (informativ) Ablaufdiagramm für die
             Grundausführung eines Dumas-Gerätes
    Anhang B (informativ) Schematische Darstellung
             geeigneter Typen von Dumas-Geräten
    Anhang C (informativ) Gerätekalibrierung
             C.1 Substanzen für die Kalibrierung
             C.2 Beispiel für die Berechnung des
                 geschätzten Sauerstoffbedarfs
                 C.2.1 Beispiel 1
                 C.2.2 Beispiel 2
    Anhang D (informativ) Beispiele für Umrechnungsfaktoren
             vom Stickstoffgehalt zum Proteingehalt
    Anhang E (informativ) Ringversuchsergebnisse
    Anhang F (informativ) Zusammenhang zwischen dem
             Dumas-Stickstoff und dem Kjeldahl-Stickstoff
    Literaturhinweise

    Abstract - (Show below) - (Hide below)

    Describes a method for the determination of the total nitrogen content and the calculation of crude protein content of oilseeds and animal feeding stuffs.

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    Development Note Supersedes DIN EN ISO 16634. (03/2009)
    Document Type Standard
    Publisher German Institute for Standardisation (Deutsches Institut für Normung)
    Status Current

    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
    DIN EN ISO 20483:2014-03 CEREALS AND PULSES - DETERMINATION OF THE NITROGEN CONTENT AND CALCULATION OF THE CRUDE PROTEIN CONTENT - KJELDAHL METHOD (ISO 20483:2013)
    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)
    ISO 20483:2013 Cereals and pulses Determination of the nitrogen content and calculation of the crude protein content Kjeldahl method
    ISO 664:2008 Oilseeds Reduction of laboratory sample to test sample
    ISO 6497:2002 Animal feeding stuffs Sampling
    ISO 14891:2002 Milk and milk products Determination of nitrogen content Routine method using combustion according to the Dumas principle
    DIN ISO 5725-1:1997-11 ACCURACY (TRUENESS AND PRECISION) OF MEASUREMENT METHODS AND RESULTS - PART 1: GENERAL PRINCIPLES AND DEFINITIONS
    ISO 6496:1999 Animal feeding stuffs Determination of moisture and other volatile matter content
    ISO 13690:1999 Cereals, pulses and milled products Sampling of static batches
    ISO 5983-2:2009 Animal feeding stuffs Determination of nitrogen content and calculation of crude protein content Part 2: Block digestion and steam distillation method
    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 6498:2012 Animal feeding stuffs — Guidelines for sample preparation
    ISO 5500:1986 Oilseed residues Sampling
    ISO 542:1990 Oilseeds — Sampling
    ISO 665:2000 Oilseeds Determination of moisture and volatile matter content
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