National Intercomparison of Indoor Radon Measurements by Charcoal Canisters

The results and conclusions of the national comparison of indoor radon measurements in 2023 in Serbia are presented in this paper. The participants were three accredited laboratories that use the same method for indoor radon measurement, based on adsorption to activated charcoal, according to international standard protocol. The results of intercomparison were evaluated using the z-score performance criteria. Also, the limitations and advantages of several different methods for indoor radon testing, as well as the possible use for radiological risk assessment are discussed.