Dates for the ring trials

Dates for the ring trials 2024:

Trial 45
Registration deadline: 20.03.2024
Dispatch of material: 08.04.2024
Last submission of results: 08.05.2024

Trial 46
Registration deadline: 11.10.2024
Dispatch of material: 21.10.2024
Last submission of results: 21.11.2024

Dates for the ring trials 2025:

Trial 47
Registration deadline: 17.02.2025
Dispatch of material: 03.03.2025
Last submission of results: 03.04.2025

Trial 48
Registration deadline: 01.10.2025
Dispatch of material: 20.10.2025
Last submission of results: 20.11.2025

Results of the current or previous external quality control run are available at
To access the QuaDeGA platform the center ID (=participant´s number without “TN”) and the indi­vid­ual pass­word are required. If the pass­word has been for­got­ten, con­tact: