IEC 61563 pdf download Radiation protection instrumentation – Equipment for measuring specific activity of gamma-emitting radionuclides in foodstuffs 1.1Scope This International Standard applies to portable instruments used for measuring the specific orvolumic activity of gamma-emitting radionuclides in food/foodstuffs intended for operationunder field conditions，particularly in case of a post-accidental situation. It does not apply tolow background laboratory instrumentation requiring highly skilled...