Task 5.1: Identification, evaluation and selection of European radon calibration facilities for validation of traceability

The aim of this task is to identify existing European radon calibration facilities and primary radon gas standards, to obtain information about their capabilities, to evaluate their suitability for inclusion in the validation exercises to be conducted in Task 5.2 and Task 5.3 and to select those radon calibration facilities that will be included in the validation exercise.
For this purpose questionnaires will be created and distributed to European radon calibration facilities and institutions which have primary and secondary standards and selected end-users. The questionnaires will be evaluated and based on this information the organisations to be included in the traceability validation exercises will be selected.