Report on the key comparison, CCM.F-K23 in force at 200 N and 500 N

The working group force of the CCM decided to make a comparison at 200 N and 500 N at the meeting held in Kajaani in November 2014. At the meeting held in Braunschweig in June 2017 it was decided that METAS would be the pilot of this comparison. The working group agreed that the transfer standard would be independently organized by each participating laboratory according to the principle "bring your own device". This solution would reduce the work needed by the pilot and would allow for a faster conclusion of the comparison. The participants have been chosen according to their actual CMC and to the expected uncertainty of their reference system.