International Comparison

home CIPM MRA International Comparison

Competencies proven through key comparisons and peer review

Key Comparisons (KCs) is an international comparison of key measurement standards recognized as the largest international cooperation program in metrology. Four international organizations, including IAEA and WMO, as well as 98 economies have signed on to the CIPM MRA (Mutual Recognition Arrangement) since it was adopted in October 1999. While equipping itself with a quality management system befitting international standards to fulfil conditions of the CIPM MRA, KRISS has been continuously engaged in the KC. As of 2017, KRISS has participated in KCs of 428 categories, and its capacities are recognized as being among the world’s best in many areas.

Participation in KC (as of Dec. 2017)

Participation in KC (as of Dec. 2017)
KC Participation KC Pilot Total KC Partiipation Total KC Pilot Pilot Ratio
CC RMO CC RMO
245 104 20 59 428 79 18.5%
349 79

CMCs listed in the KCDB (as of Dec. 2017)

CMCs listed in the KCDB (as of Dec. 2017)
AUV M L PR T TF EM RI QM Total
56 50 41 41 74 24 90 214 515 1,100

Key Comparison

A cross-comparison program for measurement outcome conducted by NMIs in different countries by sector to secure international equivalence.
• Holding measurement capacities of international level is a prerequisite to participate in the KC organized by CIPM.

The quality system of KRISS is regularly reviewed by experts from overseas NMIs to ensure its Calibration Measurement Capabilities (CMCs) and compliance with ISO 17025 & Guide 34. The peer review by overseas experts is conducted every 5 years in accordance with the APMP Guideline.