This document focuses on monitoring the activity concentrations of radioactive gases, from which the activity released are calculated, in the gaseous effluent discharge from facilities producing positron emitting radionuclides and radiopharmaceuticals. This standard is also refers as ISO/IEC Guide 98-3-1, ISO/DTR 22930-2:2019. You can comment on this draft international standard by contacting your national member. Comment Closes On May 3th in 2020.