CIPM MRA COMPARISON REPORTS

This report describes the Bilateral Comparison GULFMET.PR-K4.2021.1 between TÜB?TAK UME and SASO NMCC for luminous flux, conducted by the Regional Metrology Organization “the Gulf Association for Metrology” (GULFMET). The comparison was originally registered as GULFMET.PR-K4.2021, and combined two bilateral comparisons with the same link/pilot laboratory – TÜBITAK Ulusal Metroloji Enstitüsü (TÜBITAK UME), Türkiye. The non-link laboratories were the National Measurement and Calibration Center at Saudi Standards, Metrology and Quality Organization (SASO NMCC), The Kingdom of Saudi Arabia, and the National Institute of Standards (NIS), Egypt.

The aim of the comparison was to link the SASO NMCC measurement results to the CIPM key comparison CCPR-K4, conducted by the Consultative Committee for Photometry and Radiometry (CCPR).

Three Polaron LF200W type of the lamps, produced as the transfer standard for luminous flux measurements and belonging to the pilot laboratory, were used as artefacts. The sequence of measurements was pilot – participant – pilot. The analysis of the comparison was performed following the approach described in the Appendix A of the Guidelines for CCPR and RMO Bilateral Key Comparisons (CCPR-G5).

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 CCPR, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).