The pot has been thoroughly tested as part of the TÜV/GS test and the special LFGB test (conformity for food contact). The pot and its coating are free from harmful substances and BPA, as well as nickel and cobalt. There is also no direct contact with the aluminium of the pot, as the aluminium is coated in two layers with a non-stick coating. As long as this coating is intact, the aluminium is completely sealed off and invisible.