EN ISO 20483:2013
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)
04-12-2013
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
ISO 20483:2013 specifies 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. The method does not distinguish between protein nitrogen and non-protein nitrogen.
| Committee |
CEN/TC 338
|
| DevelopmentNote |
Supersedes PREN ISO 20483. (12/2013)
|
| DocumentType |
Standard
|
| PublisherName |
Comite Europeen de Normalisation
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| BS EN ISO 20483:2013 | Identical |
| SS-EN ISO 20483:2013 | Identical |
| I.S. EN ISO 20483:2013 | Identical |
| PN EN ISO 20483 : 2014 | Identical |
| NBN EN ISO 20483 : 2014 | Identical |
| DIN EN ISO 20483:2014-03 | Identical |
| NEN EN ISO 20483 : 2013 | Identical |
| NS EN ISO 20483 : 2013 | Identical |
| NF EN ISO 20483 : 2014 | Identical |
| ISO 20483:2013 | Identical |
| UNE-EN ISO 20483:2014 | Identical |
| 14/30301619 DC : 0 | BS EN 15948 - CEREALS - DETERMINATION OF MOISTURE AND PROTEIN - METHOD USING NEAR-INFRARED-SPECTROSCOPY IN WHOLE KERNELS |
| DIN EN 15948:2015-06 | CEREALS - DETERMINATION OF MOISTURE AND PROTEIN - METHOD USING NEAR-INFRARED-SPECTROSCOPY IN WHOLE KERNELS |
| EN 15948:2015 | Cereals - Determination of moisture and protein - Method using Near-Infrared-Spectroscopy in whole kernels |
| I.S. EN 15948:2015 | CEREALS - DETERMINATION OF MOISTURE AND PROTEIN - METHOD USING NEAR-INFRARED-SPECTROSCOPY IN WHOLE KERNELS |
| BS EN 15948:2015 | Cereals. Determination of moisture and protein. Method using Near-Infrared-Spectroscopy in whole kernels |
| 09/30201998 DC : 0 | BS EN 15948 - CEREALS - DETERMINATION OF MOISTURE AND PROTEIN - METHOD USING NEAR-INFRARED-TRANSMITTANCE IN COMBINATION WITH AN ARTIFICIAL NEURAL NETWORK (ANN) PREDICTION MODEL AND ASSOCIATED DATABASE |
| UNE-EN 15948:2015 | 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 |
| ISO 3188:1978 | Starches and derived products — Determination of nitrogen content by the Kjeldahl method — Titrimetric 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 |