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Autor:
J Diuguid, B Reese, F E Quick, B M Christensen, D Coggin, D G Porterfield, Allan D Davidson, R T Teague, P Proksa, H K Francis, E R Austin, F J Johnson
Publikováno v:
Journal of AOAC INTERNATIONAL. 66:769-774
A melhod for measuring nitrogen derived from urea, melhylenediurea (MDU), and dimethylenetriurea (DMTU) was tested by 9 collaborators. Collaborators made single determinations on 2 separate days on 5 sets of paired samples. Samples were extracted wit