Résumé
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).
Informations générales
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État actuel: AnnuléeDate de publication: 1978-09Stade: Annulation de la Norme internationale [95.99]
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Edition: 1Nombre de pages: 6
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Comité technique :ISO/TC 34/SC 3ICS :67.080.01
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Cycle de vie
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Actuellement
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Révisée par
PubliéeISO 5519:2008