NRG is an internationally operating nuclear service provider. NRG produces isotopes, carries out nuclear technology research, is a consultant in the field of safety and reliability of nuclear facilities and a service provider in radiation protection. NRG is the world's leading producer and Supplier of isotopes. Every day, 30,000 patients worldwide are diagnosed with isotopes produced at NRG. NRG contributes to the possibilities of using nuclear technology to diagnose patients, control their pain or treat them. Innovation and development of new products helps achieve this. This Selection Guideline concerns the Competative Dialogue procedure for the Isotope Cell. This guideline for the Selection Phase covers the period from the publication of the contract notice until the Invitation to the Dialogue Phase.