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Full Description

This part of ISO 6974 gives guidelines for the quantitative analysis of natural-gas-containing constituents within the application ranges given in Table 1.

Individual methods, as described in part 3 and subsequent parts of ISO 6974, may have more restricted application ranges than those in Table 1, but in all cases they will fall within this overall scope of the ranges given.

Table 1 - Application ranges
ComponentMole fraction range %
Hydrogen0,001 to 0,5
Helium0,001 to 0,5
Oxygen0,001 to 5
Nitrogen0,001 to 60
Carbon dioxide0,001 to 35
Methane40 to 100
Ethane0,02 to 15
Propane0,001 to 25
Butanes0,000 1 to 5
Pentanes0,000 1 to 1
Hexanes and heavier0,000 1 to 0,5
 

Document History

  1. ISO 6974-1:2012


    Natural gas - Determination of composition and associated uncertainty by gas chromatography - Part 1: General guidelines and calculation of composition

    • Most Recent
  2. ISO 6974-1:2000

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    Natural gas -- Determination of composition with defined uncertainty by gas chromatography -- Part 1: Guidelines for tailored analysis

    • Historical Version
  3. ISO 6974:1984


    Natural gas -- Determination of hydrogen, inert gases and hydrocarbons up to C8 -- Gas chromatographic method

    • Historical Version