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DIN EN ISO 20483 E : 2014

Current
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

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

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.

DocumentType
Standard
Pages
20
PublisherName
German Institute for Standardisation (Deutsches Institut für Normung)
Status
Current

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

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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