Skip to content
Please enter a keyword to search
  • Preview

    I.S. EN ISO 16634-2:2016

    Current The latest, up-to-date edition.

    FOOD PRODUCTS - DETERMINATION OF THE TOTAL NITROGEN CONTENT BY COMBUSTION ACCORDING TO THE DUMAS PRINCIPLE AND CALCULATION OF THE CRUDE PROTEIN CONTENT - PART 2: CEREALS, PULSES AND MILLED CEREAL PRODUCTS (ISO 16634-2:2016)

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  01-01-2016

    Publisher:  National Standards Authority of Ireland

    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.

    Add To Cart

    Table of Contents - (Show below) - (Hide below)

    National Foreword
    European Foreword
    Foreword
    Introduction
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Principle
    5 Reagents
    6 Apparatus
    7 Sampling
    8 Preparation of the test sample
    9 Procedure
    10 Calculation and expression of results
    11 Precision
    12 Test report
    Annex A (informative) - Flowchart for a basic Dumas
            apparatus
    Annex B (informative) - Schematic diagrams of suitable
            types of Dumas apparatus
    Annex C (informative) - Equipment calibration
    Annex D (informative) - Results of interlaboratory tests
    Bibliography

    Abstract - (Show below) - (Hide below)

    Describes a method for the determination of the total nitrogen content and the calculation of the crude protein content of cereals, pulses and milled cereal products.

    General Product Information - (Show below) - (Hide below)

    Development Note Supersedes SR CEN ISO/TS 16634-2. (07/2016)
    Document Type Standard
    Publisher National Standards Authority of Ireland
    Status Current
    Supersedes

    Standards Referencing This Book - (Show below) - (Hide below)

    ISO 5725-1:1994 Accuracy (trueness and precision) of measurement methods and results — Part 1: General principles and definitions
    ISO 1871:2009 Food and feed products General guidelines for the determination of nitrogen by the Kjeldahl method
    ISO 20483:2013 Cereals and pulses — Determination of the nitrogen content and calculation of the crude protein content — Kjeldahl method
    ISO 712:2009 Cereals and cereal products — Determination of moisture content — Reference method
    ISO 5725-6:1994 Accuracy (trueness and precision) of measurement methods and results — Part 6: Use in practice of accuracy values
    ISO 14891:2002 Milk and milk products Determination of nitrogen content Routine method using combustion according to the Dumas principle
    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
    View more information

    • Access your standards online with a subscription

      Features

      • Simple online access to standards, technical information and regulations
      • Critical updates of standards and customisable alerts and notifications
      • Multi - user online standards collection: secure, flexibile and cost effective