I.S. EN ISO 6974-4:2002
Current
The latest, up-to-date edition.
NATURAL GAS - DETERMINATION OF COMPOSITION WITH DEFINED UNCERTAINTY BY GAS CHROMATOGRAPHY - PART 4: DETERMINATION OF NITROGEN, CARBON DIOXIDE AND C[1] TO C[5] AND C[6+] HYDROCARBONS FOR A LABORATORY AND ON-LINE MEASURING SYSTEM USING TWO COLUMNS
Hardcopy , PDF
English
01-01-2002
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.
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
Specifies a gas chromatographic method for the quantitative determination of natural gas constituents using a two-column system.
| DocumentType |
Standard
|
| Pages |
22
|
| PublisherName |
National Standards Authority of Ireland
|
| Status |
Current
|
| Standards | Relationship |
| BS EN ISO 6974-4:2001 | Identical |
| ISO 6974-4:2000 | Identical |
| DIN EN ISO 6974-4:2002-06 | Identical |
| UNE-EN ISO 6974-4:2003 | Identical |
| EN ISO 6974-4:2001 | Identical |
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