National foreword
Committees responsible
Method
0. Introduction
1. Scope and field of application
2. References
3. Principle
4. Materials
5. Apparatus
6. Samples
7. Procedure
8. Expression of results
9. Test report
Annexes
A. Possible modifications of the method
B. Error calculation
Tables
1. Concentration ranges of natural gas components
2. Calibration gas mixtures
3. Order of elution of components
4. Tolerance between concentrations of components
in the calibration gas mixture and sample
5. Relative response factors of the FID for natural
gas components
6. Repeatability
Figures
1. Analysis of helium, hydrogen, oxygen and nitrogen
on the molecular sieve 13 X column, with indication
of the absolute retention time, in minutes
2. Analysis of nitrogen (oxygen), carbon dioxide and
hydrocarbons from C1 up to C8 on the Porapak R
column
3. Schematic diagram of the backflushing procedure