G Vargha et al 2008 Metrologia 45 08004 doi:10.1088/0026-1394/45/1A/08004
G Vargha1, M J T Milton1, Hans-Joachim Heine2, Belen Martin3, Alejandro Pérez Castorena4, Victor Serrano Caballero4, Francisco Rangel Murillo4, Manuel Avila Salas4, Carlos Ramírez Nambo4, Melina Pérez Urquiza4, Carlos Carbajal Alarcón4, Jin Chun Woo5, Tatiana Mace6, Adriaan van der Veen7, Rob Wessel7, Paul Ziel7, Damian Smeulders8, Nobuhiro Matsumoto9, Leonid Konopelko10 and Yury Kustikov10
Show affiliationsTwenty-two standards of synthetic natural gas standards were submitted from ten different NMIs for a comparison using the harmonization method developed by NPL. All standards had seven components. This method can remove the correlated variation in calibration data for multi-component mixtures and makes a significant improvement in fitting individual points to calibration curves. After removing the non-random variation from the data all the standards showed very good agreement with only a few outliers. The typical deviation from the calibration curves was around 0.05% (relative) for the main components and less than 0.2% for the butanes.
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Issue 1A ( 1 January 2008)
G Vargha et al 2008 Metrologia 45 08004
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