How do you measure low-level radioactivity?

Digital Geiger Counters are extremely sensitive and will detect and measure background radiation in addition to detecting and measuring radioactivity above background radiation.

by using Narda SRM Tool .We can Test radiation that How much radiation have that individual place or any location.

To accurately measure the low level activity of the radiation sources, we have to define the type of the industrial applications. Mainly its measured in the oil and gas , mining, petrochemicals and called NORM. the better radiation detector for gamma radiation levels which have very low energey levels such as : Gieger Muller Counter, Ionization chamber, Proportional and Scentillation detector. the available brands are: Tracerco kit, Fluke.