Final report, ongoing key comparison BIPM.QM-K1, ozone at ambient level, comparison with UNAL-CALAIRE (November 2023)

Main text As part of the ongoing key comparison BIPM.QM-K1, a comparison has been performed between the ozone standard of Colombia maintained by the Universidad Nacional de Colombia - Laboratorio de Calidad del Aire - CALAIRE (UNAL-CALAIRE) and the common reference standard of the key comparison, maintained by the Bureau International des Poids et Mesures (BIPM). The instruments have been compared over a nominal ozone amount fraction range of 0 nmol mol -1 to 500 nmol -1 . 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).