The exposimeter and accurate instructions for use can be obtained from the respective measuring points. Offer radon measurements with passive instruments (Radon exposimeter) and meet the requirements for quality assurance proven.
Federal Office for Radiation Protection: measurements with passive instruments Radon propagation in buildings image vergrößernRadonausbreitung in buildings For the measurement in a detached house at least two exposimeter are recommended (usually living room and bedroom), should be placed in the lowest living floor in rooms that are used most frequently. If also be in the basement rooms that are used frequently, should also be measured there.
Optimal is a measurement period of one year, to account for seasonal variations. A shorter measurement time should be at least 2 - 3 months, and preferably during the heating