Abstract Preview

ISO 13904:2016 specifies a method for determination of the total and free tryptophan (Trp) content in feeding stuffs (e.g. complete and complementary feeds, supplementary feeds, raw materials, ingredients, and concentrates) and determination of free tryptophan in commercial pure substances and premixtures containing more than 2 % of tryptophan.

It does not distinguish between D- and L-forms.

General information

  • Status :  Published
    Publication date : 2016-02
  • Edition : 2
    Number of pages : 14
  • :
    ISO/TC 34/SC 10
    Animal feeding stuffs
  • 65.120
    Animal feeding stuffs

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Format Language
  • CHF88

Life cycle

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