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EN ISO 13904:2016

Animal feeding stuffs - Determination of tryptophan content (ISO 13904:2016) EN ISO 13904:2016

Publication date:   Jun 16, 2016

General information

60.60 Standard published   Mar 9, 2016

CEN

CEN/TC 327 Animal feeding stuffs - Methods of sampling and analysis

European Norm

65.120   Animal feeding stuffs

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Scope

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.

Life cycle

PREVIOUSLY

WITHDRAWN
EN ISO 13904:2005

NOW

PUBLISHED
EN ISO 13904:2016
60.60 Standard published
Mar 9, 2016