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TRACERLAB offers compact totally-integrated systems for the measurement of Radon- and its daughters.

Radon- and Thoron-Daughter-Working-Level-Monitor
- BWLM-PLUS-S
- BWLM-PLUS-2S
- RDM-PLUS-S
- RDM-PLUS-SF
- ERS-RDM-PLUS-2S
- ERS-RDM-2S/CV

The measurement of the Radon- and Thoron-Daughter- Concentration in the air, by using Alpha-Spectroscopy.

Introduction of the method:

The most important components of the natural radioactivity are the daughters of Radon-222. The Working Level Monitor measures the potential alpha energy concentration of Radon-222 decay products in the air.

Decay chain of Rn-222

Additionally it analyzes the concentrations of the different daughter nuclides. These radioactive nuclides are inhaled and deposited in the respiratory tract.

The BWLM-PLUS-S, BWLM-PLUS-2S, RDM-PLUS-S,
RDM-PLUS-SF and ARDM-PLUS-S operate in the same way. It sucks in the airborne Radon-Daughters and deposites them on a filter. The collected radioactive material irradiates the detector instead of the lung tissue. That is, the measurement devices does not measure the radon gas, but the much more dangerous Radon-Daughters.

The risk attendant upon exposure to radon gas and the much more dangerous radon daughters in residential and commercial buildings, working-areas at special places like mines, caves etc. have received considerable recent discussion in the press and much public and governmental attention. Exposure of radon gas and the decay products, the radon daughters, are an organic problem which must be identified and addressed.


TRACERLAB offers the instruments for such applications, as are:

- BWLM-PLUS-S, Single-Channel Radon- and Thoron-Daughter Working-Level-Monitor, with a removable sampler for the use of an Aerosol-Filter. Real-time and direct reading, self contained and portable monitor for the determination of the Radon/Thoron-Progeny Concentration. Operating of the BWLM-PLUS-S by using the integrated PDA or by an external PC with the application software. Connection via USB. High-Power version with Li-Ion-Battery and charger.

- BWLM-PLUS-2S, 2-Channel Radon- and Thoron-Daughter Working-Level-Monitor, with two each independent samplers, one with filter, one with mesh. Real-time and direct reading, self contained and portable monitor for the determination of the attached and unattached Radon/Thoron-Progeny Concentration. Operating of the BWLM-PLUS-2S by using the integrated PDA or by an external PC with the application software. Connection via USB. High-Power version with Li-Ion-Battery and charger.

- RDM-PLUS-S, Radon- and Thoron-Daughter Working-Level-Monitor, light-weight and compact - all-in-one - monitor. Real-time and direct reading, self contained and portable monitor for the determination of the Radon/Thoron-Progeny Concentration. Operating of the RDM-PLUS-S by using the integrated PDA or by an external PC with the application software. Connection via USB. High-Power version with Li-Ion-Battery and charger.

- RDM-PLUS-SF, Automatic-Step-Filter-System, for the determination of the Radon/Thoron-Progeny Concentration. Self contained system or installation in a stainless-steel-container as a station. Standard version with a built-in air-suction-pump,or Low-Level-Version with a high-air-flow-pump,to reach a very low limit of detections.

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To reach a very low limit of detection, it is possible as an option to operate the BWLM-PLUS-S, RDM-PLUS-SF and ERS-RDM-PLUS-2S with an external flow-regulated air-pump, with an air-flow-rate of appr. 800 l/h instead of the internal pump with an air-flow-rate of appr. 150 l/h
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Special-applications:

- ERS-RDM-PLUS-2S, 2-Channel, real-time, direct reading, self contained and portable monitor for the determination of the Radon/Thorn-Gas- & Radon/Thoron-Progeny-concentration. Operating of the ERS-RDM-PLUS-2S by using the integrated PDA or by an external PC with the application software. Connection via USB. High-Power version with Li-Ion- Battery and charger.

- ERS/RDM-2S, 2-Channel, real-time, direct reading, self contained and portable monitor for the determination of the Radon/Thorn-Gas- & Radon/Thoron-Progeny-concentration. Operating of the ERS-RDM-2S by using the integrated Panel-PC or by an external PC with the application software. Connection via USB. High-Power version with Li-Ion- Battery and charger.