The objective of the comparison is to demonstrate/improve the capabilities of quoted calibration measurement capabilities (CMC) at 500 kg.
Transfer standard will be one 500 kg stainless steel standards provided by CMI.
The technical protocol can be downloaded here>>
Progress Report 2021-05-07
The final version of the technical protocol, measurement report and time schedule were agreed in Spring 2017. The measurements started in June 2017 and were completed in December 2020.
The time schedule was revised several times due to difficulties in arranging customs documentation and pandemic situation in Europe. Finally, twenty laboratories performed measurements and reported their results to the pilot laboratory, one laboratory (PTB) withdrawn from the comparison. In the beginning of 2021 some inconsistencies in reporting of some laboratories were resolved and one laboratory repeated measurements.
Draft A report was circulated at the end of March 2021 and participants were asked to submit their comments before the end of May 2021.
Progress Report 2019-03-26
During the last year the time schedule was revised two times due to difficulties in arranging customs documentation.
Progress Report 2018-03-09
The technical protocol, measurement report and time schedule have been agreed. Measurements started in June 2017. So far 7 laboratories have performed measurements and reported their result to the pilot laboratory.
Progress Report 2017-05-11
The technical protocol and measurement report are agreed. The time schedule is agreed. Measurements will start in June 2017.
Progress Report 2016-06-02
The technical protocol and measurement report under preparation (new circulation scheme of the transfer standard). A volume determination of the transfer standard at CMI is finished. A new time schedule need to be agreed among participants.
Progress Report 2015-05-15
The technical protocol and measurement report are prepared. A volume determination of the transfer standard underway at CMI. When the transfer standard is ready, a new time schedule will be agreed among participants.