Skip to content
Please enter a keyword to search

  • BS EN ISO 6974-4:2001

    Current The latest, up-to-date edition.

    Natural gas. Determination of composition with defined uncertainty by gas chromatography Determination of nitrogen, carbon dioxide and C1 to C5 and C6+ hydrocarbons for a laboratory and on-line measuring system using two columns

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  15-07-2001

    Publisher:  British Standards Institution

    Add To Cart

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

    Foreword
    Introduction
    1 Scope
    2 Normative references
    3 Principle
    4 Materials
    5 Apparatus
    6 Procedure
      6.1 Gas chromatographic operating conditions
      6.2 Performance requirements - Peak resolution
      6.3 Determination - Outline of the analysis
    7 Expression of results
      7.1 Calculation
      7.2 Precision and accuracy
    8 Test report
    Annex A (informative) Procedure for setting valve timings
                          and restriction setting
    Annex B (informative) Final time
    Annex C (informative) Typical precision values
    Bibliography

    Abstract - (Show below) - (Hide below)

    Describes the gas chromatographic method for the quantitative determination of natural gas constituents using a two-column system.

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

    Committee PTI/15
    Development Note Renumbers and supersedes BS ISO 6974-4 (08/2002) 2001 Version incorporates amendment 13838 to BS ISO 6974-4. Supersedes BS 3156-11.1.1(1986) and 95/123188 DC. (11/2005)
    Document Type Standard
    Publisher British Standards Institution
    Status Current
    Supersedes

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

    ISO 6976:2016 Natural gas — Calculation of calorific values, density, relative density and Wobbe indices from composition
    ISO 6974-2:2012 Natural gas — Determination of composition and associated uncertainty by gas chromatography — Part 2: Uncertainty calculations
    ISO 10723:2012 Natural gas Performance evaluation for analytical systems
    ISO 6143:2001 Gas analysis — Comparison methods for determining and checking the composition of calibration gas mixtures
    ISO 6142:2001 Gas analysis Preparation of calibration gas mixtures Gravimetric method
    EN ISO 6974-1:2012/AC:2012 NATURAL GAS - DETERMINATION OF COMPOSITION AND ASSOCIATED UNCERTAINTY BY GAS CHROMATOGRAPHY - PART 1: GENERAL GUIDELINES AND CALCULATION OF COMPOSITION (ISO 6974-1:2012/COR 1:2012)
    ISO 6974-1:2012 Natural gas — Determination of composition and associated uncertainty by gas chromatography — Part 1: General guidelines and calculation of composition
    ISO 7504:2015 Gas analysis Vocabulary
    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