International comparison CCQM-K118 natural gas

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00177016%3A_____%2F22%3AN0000063" target="_blank" >RIV/00177016:_____/22:N0000063 - isvavai.cz</a>

Result on the web

<a href="https://www.bipm.org/documents/20126/77652356/CCQM-K118.pdf/9bca0fc2-e2f9-3041-d2d9-6b5dee186d21" target="_blank" >https://www.bipm.org/documents/20126/77652356/CCQM-K118.pdf/9bca0fc2-e2f9-3041-d2d9-6b5dee186d21</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/0026-1394/59/1A/08017" target="_blank" >10.1088/0026-1394/59/1A/08017</a>

Result language

angličtina

Original language name

International comparison CCQM-K118 natural gas

Original language description

Main text CCQM-K118 was an international key comparison on natural gas composition with two types of gases, i.e., a low calorific hydrogen-enriched natural gas and a high calorific LNG type of gas. There were 14 participating laboratories. The traveling standards (i.e., 14 mixtures each) were obtained from an external source and checked for homogeneity and stability before and after the participants' measurements at the two coordinating laboratories. The data evaluation was performed using a consensus value and a laboratory effect model. The results of the participants were benchmarked against a key comparison reference value computed from the largest consistent subset (LCS) of the submitted results, adjusted for the differences between the travelling standards. For the first time in a key comparison in gas analysis, the model included a term to account for excess variability in the LCS. Most of the participants reported one or a few (slightly) discrepant results. Partly this is due to the heterogeneity and heteroscedasticity of the datasets. In all, the results in this key comparison demonstrate the good comparability of the national measurement standards for natural gas composition maintained by the participating NMIs. Main text. To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database kcdb.bipm.org/. The final report has been peer-reviewed and approved for publication by the CCQM, according to the provisions of the CIPM Mutual Recognition Arrangement (MRA). To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database https://www.bipm.org/kcdb/. The final report has been peer-reviewed and approved for publication by the CCQM, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).

Czech name

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Czech description

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Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

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OECD FORD branch

10406 - Analytical chemistry

Project

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Continuities

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Metrologia

ISSN

00261394

e-ISSN

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Volume of the periodical

59

Issue of the periodical within the volume

1A

Country of publishing house

FR - FRANCE

Number of pages

305

Pages from-to

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UT code for WoS article

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EID of the result in the Scopus database

2-s2.0-85143626757