Resumen
The method consists in extracting of a test portion with hot water, precipitating of proteine and filtrating. In presence of nitrits formation of a red cloured complex by adding sulfanilamide and naphthylethylenediamine hydrochloride, and photometric measurement at a wavelength of 538 nm.
Informaciones generales
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Estado: PublicadoFecha de publicación: 1975-09Etapa: Norma Internacional confirmada [90.93]
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Edición: 1Número de páginas: 3
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Comité Técnico :ISO/TC 34/SC 6ICS :67.120.10
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