ANIMAL FEEDING STUFFS - DETERMINATION OF NITROGEN CONTENT AND CALCULATION OF CRUDE PROTEIN CONTENT - PART 2: BLOCK DIGESTION AND STEAM DISTILLATION METHOD

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

01-01-2009

Publisher

National Standards Authority of Ireland

Preview

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Only cited Standards give presumption of conformance to New Approach Directives/Regulations.

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
6 Apparatus
7 Sampling
8 Preparation of test sample
9 Procedure
   9.1 General
   9.2 Test portion
   9.3 Determination
   9.4 Blank test
   9.5 Recovery tests
10 Calculation and expression of results
   10.1 Calculation
   10.2 Calculation of crude protein content
   10.3 Expression of crude protein content results
11 Precision
   11.1 Interlaboratory tests
   11.2 Repeatability
   11.3 Reproducibility
12 Test report
Annex A (informative) - Results of interlaboratory tests
Annex B (informative) - Results of a proficiency test; comparison
        of the colorimetric and potentiometric endpoint
        determination of the titration
Bibliography

Describes a method for the determination of nitrogen content of animal feeding stuffs according to the Kjeldahl method, and a method for the calculation of the crude protein content.

DocumentType	Standard
Pages	26
PublisherName	National Standards Authority of Ireland
Status	Current
Supersedes	I.S. EN ISO 5983-2:2005

Standards	Relationship
UNI EN ISO 5983-2 : 2009	Identical
ISO 5983-2:2009	Identical
NEN EN ISO 5983-2 : 2009	Identical
NBN EN ISO 5983-2 : 2009	Identical
EN ISO 5983-2:2009	Identical
NF EN ISO 5983-2 : 2009	Identical
NS EN ISO 5983-2 : 2009	Identical
BS EN ISO 5983-2:2009	Identical
UNE-EN ISO 5983-2:2009	Identical
DIN EN ISO 5983-2:2009-10	Identical

ISO 5725-1:1994	Accuracy (trueness and precision) of measurement methods and results — Part 1: General principles and definitions
ISO 8655-5:2002	Piston-operated volumetric apparatus Part 5: Dispensers
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 385:2005	Laboratory glassware Burettes
ISO 6497:2002	Animal feeding stuffs Sampling
ISO 8655-2:2002	Piston-operated volumetric apparatus Part 2: Piston pipettes
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 8655-3:2002	Piston-operated volumetric apparatus Part 3: Piston burettes

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I.S. EN ISO 5983-2:2009

Current

Table of Contents

Abstract

General Product Information

International Equivalents

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