ISO 5506:1988
ISO 5506:1988

État actuel : Annulée

Cette norme a été révisée par ISO 5506:2018


The method allows inadequate cookingof the products to be detected. It applies to products having a urease activity of less than 1 mg of nitrogen per gram of product as received. For more active products the mass of test may be reduced. The principle consists in mixing of a ground test portion with a buffered urea solution, after keeping the mixture for 30 min at 30 C, neutralization of the ammonia liberated, with an exess of hydrochloric acid solution, and back-titration with standard volumetric hydroxide solution.

Informations générales

  •  : Annulée
     : 1988-08
    : Annulation de la Norme internationale [95.99]
  •  : 2
     : 2
  • ISO/TC 34/SC 2
  • RSS mises à jour

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