10/30215322 DC : 0

Superseded

BS EN ISO 6974-1 - NATURAL GAS - DETERMINATION OF COMPOSITION AND ASSOCIATED UNCERTAINTY BY GAS CHROMATOGRAPHY - PART 1: GENERAL GUIDELINES AND CALCULATION OF COMPOSITION

Available format(s)

Hardcopy , PDF

Superseded date

10-31-2012

Language(s)

English

Publisher

British Standards Institution

1 Scope
2 Normative references
3 Terms and definitions
4 Symbols (and abbreviated terms)
5 Principles of analysis
6 Analytical procedure
7 Control chart
8 Test report
Annex A (informative) - Comparative application ranges
        and characteristics of analytical methods
        described in Parts 3 to 6 of ISO 6974
Annex B (normative) - Alternative approach for bridging
        and normalization
Annex C (informative) - Methane-by-difference approach
Annex D (normative) - Relative response factors
Annex E (informative) - Testing for outliers
Annex F (normative) - Pressure correction
Annex G (informative) - Software suitable for generalised
        least squares regression analysis
Annex H (informative) - Use of control charts
Bibliography

BS EN ISO 6974-1

Committee	PTI/15
DocumentType	Draft
Pages	55
PublisherName	British Standards Institution
Status	Superseded
SupersededBy	BS EN ISO 6974-1:2012

ISO 5725-1:1994	Accuracy (trueness and precision) of measurement methods and results — Part 1: General principles and definitions
ISO 10715:1997	Natural gas — Sampling guidelines
ISO 6974-6:2002	Natural gas Determination of composition with defined uncertainty by gas chromatography Part 6: Determination of hydrogen, helium, oxygen, nitrogen, carbon dioxide and C1 to C8 hydrocarbons using three capillary columns
ISO 6974-2:2012	Natural gas — Determination of composition and associated uncertainty by gas chromatography — Part 2: Uncertainty calculations
ISO 6974-4:2000	Natural gas — Determination of composition with defined uncertainty by gas chromatography — Part 4: Determination of nitrogen, carbon dioxide and C1 to C5 and C6+ hydrocarbons for a laboratory and on-line measuring system using two columns
ISO 10723:2012	Natural gas Performance evaluation for analytical systems
ISO 16664:2017	Gas analysis — Handling of calibration gases and gas mixtures — Guidelines
ISO 6974-3:2000	Natural gas Determination of composition with defined uncertainty by gas chromatography Part 3: Determination of hydrogen, helium, oxygen, nitrogen, carbon dioxide and hydrocarbons up to C8 using two packed columns
ISO Guide 35:2017	Reference materials Guidance for characterization and assessment of homogeneity and stability
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
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 5479:1997	Statistical interpretation of data — Tests for departure from the normal distribution
ISO Guide 31:2015	Reference materials — Contents of certificates, labels and accompanying documentation
ISO 6974-5:2014	Natural gas Determination of composition and associated uncertainty by gas chromatography Part 5: Isothermal method for nitrogen, carbon dioxide, C1 to C5 hydrocarbons and C6+ hydrocarbons
ISO Guide 34:2009	General requirements for the competence of reference material producers
ISO/IEC Guide 98-3:2008	Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995)