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EN ISO 13904:2016

Current

Current

The latest, up-to-date edition.

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

Published date

09-03-2016

European foreword
Foreword
1 Scope
2 Principle
3 Reagents and materials
4 Apparatus
5 Procedure
6 Calculation of results
7 Precision
8 Test report
Annex A (informative) - Results of an interlaboratory test
Annex B (informative) - Observations on the method
Annex C (informative) - Sample preparation: Example for
        analyses in pure products and premixtures
Annex D (informative) - Results of an interlaboratory test for
        tryptophan in pure products and premixtures containing
        more than 2% of tryptophan
Bibliography

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.

Committee
CEN/TC 327
DocumentType
Standard
PublisherName
Comite Europeen de Normalisation
Status
Current

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