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I.S. EN ISO 8968-5:2002

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by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 5: DETERMINATION OF PROTEIN-NITROGEN CONTENT

Available format(s)

Hardcopy , PDF

Superseded date

08-05-2016

Superseded by

I.S. EN ISO 8968-4:2016

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 references
3 Term and definition
4 Principle
5 Reagents
6 Apparatus
7 Sampling
8 Preparation of test sample
9 Procedure
   9.1 Test portion
   9.2 Direct determination
   9.3 Indirect determination
10 Calculation and expression of results
   10.1 Calculation of protein-nitrogen content
   10.2 Calculation of true protein content
11 Precision
   11.1 Interlaboratory test
   11.2 Repeatability
   11.3 Reproducibility
12 Test report
Bibliography

Describes a method for the direct determination of the protein-nitrogen content of liquid milk, whole or skimmed.

DocumentType
Standard
Pages
18
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Superseded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 8968-4:2016 Milk and milk products Determination of nitrogen content Part 4: Determination of protein and non-protein nitrogen content and true protein content calculation (Reference method)
ISO 707:2008 Milk and milk products — Guidance on sampling
ISO 8968-2:2001 Milk Determination of nitrogen content Part 2: Block-digestion method (Macro 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 5725:1986 Precision of test methods Determination of repeatability and reproducibility for a standard test method by inter-laboratory tests

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