Water quality - Determination of nitrogen - Determination of bound nitrogen (TN<(Index)b>), following oxidation to nitrogen oxides; German version EN 12260:2003— 15 стр.
Flat Steel Products; Hot Galvanized Wide Strip and Sheet of Mild Unalloyed Steels and General Structural Steels; Dimensions, Permissible Deviations on Dimension and Form— 5 стр.
Water quality - Evaluation of ultimate aerobic biodegradability of organic compounds in aqueous medium - Static test (Zahn-Wellens method) (ISO 9888:1999); German version EN ISO 9888:1999— 19 стр.
Water quality - Evaluation of the aerobic biodegradability of organic compounds in an aqueous medium - Semi-continuous activated sludge method (SCAS) (ISO 9887:1992); German version EN ISO 9887:1994— 15 стр.
Water quality - Evaluation of the elimination and biodegradability of organic compounds in an aqueous medium - Activated sludge simulation test (ISO 11733:1995); German version EN ISO 11733:1998— 26 стр.