Resumen
The method consists in homogenizing the product, followed by quantitative entraining, by steam, of the acid present in a test portion, determination of the acid in the destillate obtained, either by spectrophotometry in the ultra-violet range (technique A) or by measuring by photocolorimetry or by spectrophotometry the pink colour obtained after oxidation by chromic acid and then treatment with thiobarbituric acid (technique B).
Informaciones generales
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Estado: RetiradaFecha de publicación: 1978-09Etapa: Retirada de la Norma Internacional [95.99]
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Edición: 1Número de páginas: 6
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Comité Técnico :ISO/TC 34/SC 3ICS :67.080.01
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Ciclo de vida
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Ahora
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Revisada por
PublicadoISO 5519:2008
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