Skip to content
Please enter a keyword to search
  • Preview

    S.R. CEN ISO TS 16634-2:2009

    View superseded by
    Withdrawn A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
    View superseded by

    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

    Available format(s):  Hardcopy, PDF

    Withdrawn date:  13-05-2021

    Language(s):  English

    Published date:  01-01-2009

    Publisher:  National Standards Authority of Ireland

    Add To Cart

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

    Foreword
    Introduction
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Principle
    5 Reagents
    6 Apparatus
    7 Sampling
    8 Preparation of 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) - Examples of factors for converting
                            nitrogen content to protein content
    Annex E (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)

    Document Type Standard
    Publisher National Standards Authority of Ireland
    Status Withdrawn
    Superseded By

    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