... produced by a production process which involves appropriate measures to minimise contamination of hides and skins, preparation of the hides and skins by brining, liming and intensive washing followed by exposure of the material to a pH of > 11 for > 3 hours at temperature > 80 °C and followed by heat treatment at > 140 °C for 30 minutes at > 3,6 bar or a by an equivalent production process approved by the Commission after consultation of the appropriate Scientific Committee ...