Navigation and service


SAR values of mobile phones

mobile phones

SAR values of mobile phones

The specific absorption rate (SAR) is a measure for the energy absorbed by the body. Its measure is Watt per kilogram (W/kg). In order to avoid adverse health effects, the specific absorption rate of a mobile phone must not exceed 2 Watts per kilogram.




The UV Index (UVI) is internationally standardized. It is a measure of the intensity of UV radiation reaching the earth's surface on a horizontal area, weighted according to the risk of sunburn.


Radon in buildings


Radon is constantly generated in soil by the radioactive decay of radium. The radon concentration in soil air greatly influences the radon migration into a building. A map of radon concentrations in soil air in Germany is the basis for assessing the regional radon situation.

Information for

Citizensshow more

BfS-Infomobil beim BMUB

Information material

The Federal Office for Radiation Protection (BfS) provides you free of charge with information about many key topics around radiation protection. Videos (in German only) and topic pages are to provide an image of many radiological aspects and help understand the complex correlations.

Expertsshow more


Expert knowledge

For professionals in the field of radiation protection, for scientists and researchers, as well as for physicians and for manufacturer of X-ray equipment for non-medical purposes, of transport containers for radioactive materials or of equipment and devices, in which radioactive material is inserted, BfS provides specific technical information on its website.

Pressshow more

Contact persons at BfS press office

Press information

Your contact persons at the BfS press office will help you with your inquiries. You can contact them by using the weblink "Press contact". Or have a look at more current information for media representatives.

Other BfS-Websites

Fördergerüst und Schachthalle Schacht Asse 2

Asse II mine

The Asse II mine near Wolfenbüttel is an approximately 100-year-old potash and salt mine. Between 1967 and 1978 radioactive waste were storaged here. In 2009 the Federal Office for Radiation Protection (BfS) took over operatorship for the Asse II mine. The task of BfS is to retrieve the radioactive waste and to decommission the Asse mine.

Der Förderturm von Konrad 1

Konrad Repository

The Konrad mine, an abandoned iron ore mine located in the area of the city of Salzgitter is currently being converted to a repository for radioactive waste with negligible heat generation. About 90 per cent of the radioactive waste accruing in Germany is in this category; it does only contain about 0.1 per cent of the total radioactivity of all waste, though.

Endlager Morsleben - Luftaufnahme

Morsleben Repository

The Bartensleben mine in Morsleben served to mine potash and rock salt before it became a repository for radioactive waste in 1971. Until 1998, waste from nuclear power plants from the GDR and, later on, also from the Federal Republic of Germany was disposed of here. The Federal Office for Radiation Protection has now also applied for the decommissioning of the repository.

© Bundesamt für Strahlenschutz