This document specifies a test method for determination of the activity concentrations of the radionuclides potassium (K-40), uranium (U-238) and thorium (Th-232) in mineral-based construction products.  

This document also specifies a method for the calculation of activity index (AI) according to Directive 2013/59/EURATOM, Annex 8 [12] for mineral-based construction products.  

The method is intended to be used for factory production control.