Intercomparisons provide information about the accuracy of measurements. An objective assessment can be made by allowing different detectors to be compared side by side. The results can be used by individual laboratories to identify and rectify problems, as well as providing calibrations for their detectors that can be traced to international standards.
The Centre for Radiation, Chemical and Environmental Hazards of Public Health England (PHE), formerly part of the Health Protection Agency (HPA), carries out international intercomparisons of passive radon detectors each year. This report considers the results for the intercomparison carried out in 2012, for which a total of 35 laboratories from 13 countries submitted 42 sets of detectors.