NEN EN ISO 14111 : 1999

1 Scope
2 Normative references
3 Definitions
4 Fundamental principles of metrological traceability
5 Elaboration of the traceability concept
6 Chemical composition and the SI system
7 Traceability in natural-gas analysis
8 Hierarchy of reference in uncertainty assessment
9 Role of traceability in uncertainty assessment
10 Implementation of traceability in International
    Standards for natural-gas analysis
11 Examples
12 Summary
ANNEXES
A Supplementary terms and definitions
B Example of typical interlaboratory test results
C Bibliography

Defines guidelines on the application and implementation of traceability concepts in analysing natural gas.