Résumé
Equal volumes of potassium permanganate solution are added to a carpolactam test solution and to a blank (water). After standing for a specified time the absorbance, at a wavelength of 420 nm, of the test solution and of the blank are compared in cells of 5 cm thickness. The permanganat index is the difference between the absorbance of the test sample and that of the blank, multiplied by 100/3. It is a conventional measure of the content of oxidizable impurities.
Informations générales
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État actuel: AnnuléeDate de publication: 1988-04Stade: Annulation de la Norme internationale [95.99]
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Edition: 1Nombre de pages: 2
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Comité technique :ISO/TC 61/SC 5ICS :71.080.30
- RSS mises à jour
Cycle de vie
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Actuellement
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Révisée par
PubliéeISO 8660:2002