Transnational access (TA) is where user groups from eligible countries apply to have access to conduct experimental research on topics of their choosing related to the ERIES project’s broader goals. This access is provided free of charge, where user groups can expect to have the costs of using a research infrastructure’s facilities, the costs of tests specimens in addition to the user group’s travel and board costs to come and visit the facility covered by the ERIES project funds. Details of what exactly is covered can be obtained by contacting the specific research infrastructures directly. The access is denoted “transnational” since it requires that the user group leader be located in a country other than where the research infrastructure is located. For example, a user group from Italy cannot apply to a research infrastructure also located in Italy. A user group member counts as being from the country where they are employed, not what their actual nationality or citizenship(s) may be.