DETERMINATION OF TOTAL NITROGEN IN BARLEY AND MALT BY COMBUSTION METHOD - COLLABORATIVE TRIAL

A combustion method, relying on the Dumas principle, for the determina tion of total nitrogen in barley and malt, has been collaboratively te sted by the Analysis Committee of the European Brewery Convention. Rep eatability, r(95), and reproducibility. R(95), values were 0.063 and 0 .116% of dry matter. respectively. for samples with nitrogen contents in the range 1.23 to 1.86% hi of dry matter. There was no significant difference between these values for barley and malt. The Analysis Comm ittee approved the adoption of the combustion method for inclusion in Analytica EBC as an alternative method.