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Radon Screening



Need some information on instrumentation.  I am looking for a piece(s) of personnel monitoring equipment 
that can eliminate or identify contamination contribution from Radon and daughters.  Our personnel 
release criteria is:
500dpm/100cm-2 Alpha and 5000dpm/100cm-2 Beta (Total fixed and Removable).

On certain days we exceed these numbers from radon, but do not have a good way to let individuals 
continue without having them stand around for decay.  What is out there for quick identification at these 
levels?