Measurement of ionizing radiation activity with Berthold instruments
The activity, as a physical quantity, describes the number of radioactive decays per time in a certain substance. The unit of activity is Becquerel: Bq, where 1 Becquerel corresponds to the decay of one atomic nucleus per second.
We offer both stationary and mobile measuring instruments for the determination of the radioactivity. Depending on the desired or required sensitivity of the detectors and the expected activity quantities, different options are available. Our low-level measuring systems with a low background are used for the measurement of low activities.
Activity meters for many materials
A wide variety of materials can be tested for activity, including wipe tests, aerosol filters, evaporation residues and environmental and food samples.
Since 1949, Berthold has been manufacturing measuring instruments of the highest quality for the measurement of activities. In compliance with legal requirements, we continuously develop our radioactivity measuring instruments in order to be able to respond explicitly to current customer requirements. Our aim is to provide easy-to-use measuring instruments that guarantee the determination of the activity of different materials.
Wipe tests
Wipe tests are a proven method for monitoring radioactive surface contamination in radiation protection. Samples collected using defined wiping materials are subsequently analyzed using high‑sensitivity activity measurement instruments to reliably detect even very low levels of activity. Measurement and evaluation are performed in compliance with applicable standards, including DIN 7503, and taking into account detection and decision limits in accordance with ISO 11929.
Berthold offers a range of instruments for wipe test evaluation: utilizing gas proportional or scintillation technology, from single‑sample measurement up to systems capable of analyzing up to 20 samples simultaneously. These instruments are characterized by excellent detection sensitivity, stable long‑term measurements, and reproducible results, reliably supporting users in meeting regulatory limits and internal radiation protection requirements.