Radiation Solutions RS-125 NaI Gamma-Ray Spectrometer Handheld

RS-125 – Ideal For Field Exploration
The RS-125 Spectrometer is the state-of-the art in portable hand-held radiation survey devices for the geophysical industry. It offers an integrated design with a large detector for survey or search, direct Assay readout, a Scan mode and data storage. It offers weather protection with ease of use. In addition, it has providing for wireless Bluetooth (BT) connectivity connection to a Bluetooth equipped external GPS receiver, earphone or computer.


  • High Sensitivity with large 2.0 x 2.0 NaI crystal 103 cm³ (6.3 in³ )
  • Lightweight 2kg (4.4 lb) including batteries
  • Easy to use, single button – Survey, scan, and assay modes of operation
  • Assay mode readout in %K, ppm of U & Th
  • Auto-stabilising on naturally occurring radio elements
  • Low power (4 x AA batteries) – typical 8 – 12 hour battery life at 20°C
  • No radioactive sources required for proper operation

Product Brochure
Product Brochure