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I.S. EN ISO 8968-2:2002

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by

MILK - DETERMINATION OF NITROGEN CONTENT - PART 2: BLOCK-DIGESTION METHOD (MACRO METHOD)

Available format(s)

Hardcopy , PDF

Superseded date

15-02-2014

Superseded by

I.S. EN ISO 8968-1:2014

Language(s)

English

Published date

01-01-2002

For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.

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


Dates of withdrawal of national standards are available from NSAI.

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Foreword
1 Scope
2 Normative reference
3 Term and definition
4 Principle
5 Reagents
6 Apparatus
7 Sampling
8 Preparation of test sample
9 Procedure
   9.1 Test portion and pretreatment
   9.2 Determination
   9.3 Blank test
   9.4 Recovery tests
10 Calculation and expression of results
   10.1 Calculation of nitrogen content
   10.2 Calculation of crude protein content
11 Precision
   11.1 Interlaboratory test
   11.2 Repeatability
   11.3 Reproducibility
12 Test report
Bibliography

Describes a method for the determination of the nitrogen content of liquid milk, whole or skimmed, by the block-digestion principle.

DocumentType
Standard
Pages
20
PublisherName
National Standards Authority of Ireland
Status
Superseded
SupersededBy

ISO 8968-1:2014 Milk and milk products — Determination of nitrogen content — Part 1: Kjeldahl principle and crude protein calculation
ISO 5725-1:1994 Accuracy (trueness and precision) of measurement methods and results — Part 1: General principles and definitions
ISO 707:2008 Milk and milk products — Guidance on sampling
ISO 385-1:1984 Laboratory glassware — Burettes — Part 1: General requirements
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 5725:1986 Precision of test methods Determination of repeatability and reproducibility for a standard test method by inter-laboratory tests

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