International Intercomparison exercises
We invite global participation in several ongoing projects. All involvement is voluntary and open to anyone with the skills and resources to undertake the measurements.
Reach out to the listed Project lead(s) or TWA Chair to express your interest or for additional details.
NOTE: The exchange of physical samples and sensitive technical data shall be subject to the applicable export control and national security laws and regulations of the respective participating countries.
Current active project list
- Download (updated February 2026)