This European Standard specifies the determination of Kjeldahl nitrogen according to the Kjeldahl procedure in sludge, treated biowaste and soil.Nitrate and nitrite are not included. Compounds with nitrogen bound in N-N, N-O linkages and some heterocycles
DS/EN 16169:2012 history
2012DS/EN 16169:2012 Sludge, treated biowaste and soil - Determination of Kjeldahl nitrogen