COOMET.T-S3: supplementary comparison on relative humidity (RH) from 30 % rh to 90 % rh at 23 °C

Abstract

This report describes the results of supplementary comparison COOMET.T-S3 (also known as supplementary comparison COOMET 768/GE/18) on relative humidity (RH) from 30 % rh to 90 % rh at 23 °C. The comparison was organised between the National Physical Laboratory (NPL) United Kingdom (Laboratory-coordinator) and Georgian National Agency for Standards and Metrology (GEOSTM), Georgia. The comparison started in July 2018 and finished in September 2019The majority of the bilateral degree of equivalence values, DGEOSTM/NPL , for the two participants are low compared to the uncertainty in the DoE, UGEOSTM/NPL . With this comparison, the participant GEOSTM has demonstrated their technical competence for realization of relative humidity in the range 30 %rh to 90 %rh at 23 °CMain textTo 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 CCT, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).