All Gerodur gas pipe types for gas supply were additionally certified by the DBI, the Gastechnologisches Institut gGmbH in Freiberg, within the scope of the "Verification of hydrogen compatibility of components of the gas distribution network" with regard to their suitability for the transport of hydrogen (especially with regard to permeation). An admixture of hydrogen to natural gas of, for example, 20% up to the transport of pure hydrogen (100%) is possible without any problems under consideration of the pressure classes known and permitted for PE pipes (SDR 11 up to 10 bar). DIN EN 1555-2 is used as the standard.