IAEA-RGK-1

IAEA-RGK-1 was produced from high purity (99.8%) potassium sulphate supplied by the Merck Company. The property value assigned to the IAEA-RGK-1 Certified Reference Material was calculated as activity concentration, expressed in the derived SI unit Bq kg^-1.  

Certified values for activity concentration

(based on dry mass)

(a) The uncertainty is expressed as a combined standard uncertainty (coverage factor k=1)