In accordance with EN ISO/IEC 17025:2018 and Ministerial Decree no. 174 of 6 April 2004, we have obtained approval for the EPDM elastomers of the wedges in our UNIWAT^® 504 and 507 series resilient seated gate valves following successful migration tests. These tests were carried out at the accredited IREN laboratory in Piacenza, Italy.