DIN SPEC 1138 Food products - Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content - Part 2: Cereals, pulses and milled cereal products (ISO/TS 16634-2:2009); German version CEN ISO/TS 16634-2:2009

standard by Deutsches Institut Fur Normung E.V. (German National Standard), 02/01/2010