Abstract
A key comparison of resistance standards at 100 Ω began in 2003. The pilot laboratory, 26 national metrological institutes and the BIPM participated in that comparison. The results of all laboratories show good equivalence with the comparison reference value. It can also be concluded that the results of laboratories, which directly derive their unit of resistance from the quantum Hall effect, agree within ±3 × 10−8. This is less than one order of magnitude worse than a direct comparison of QHR-systems and limited by the transportability of the transfer standards. The results have also been linked to the corresponding CIPM comparison CCEM.K-10.
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 CCEM, according to the provisions of the CIPM Mutual Recognition Arrangement (MRA).