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Office of Homeland Security (OHS)
Radiation Safety Division (RSD)
United States Department of Agriculture

Survey Instrument Calibration Services

Radiation level and contamination surveys must be performed with a properly calibrated instrument. Calibrations must be performed annually or after repair. For some instruments, it may be useful to determine the “minimum detectable activity” at the time of calibration.

The following links are provided for survey instrument calibration services: