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)

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

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

DevelopmentNote	Supersedes DIN EN ISO 16634. (03/2009)
DocumentType	Standard
Pages	38
PublisherName	German Institute for Standardisation (Deutsches Institut für Normung)
Status	Current
Supersedes	DIN EN ISO 16634:2006-07 (Draft)

Standards	Relationship
EN ISO 16634-1:2008	Identical
ISO 16634-1:2008	Identical

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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DIN EN ISO 16634-1:2009-07

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

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Abstract

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