This standard was last reviewed and confirmed in 2022.
Therefore this version remains current.
Abstract
PreviewISO 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.
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Status: PublishedPublication date: 2016-02
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Edition: 2Number of pages: 14
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- ICS :
- 65.120 Animal feeding stuffs
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en
| Format | Language | |
|---|---|---|
| std 1 92 | ||
| std 2 92 | Paper |
- CHF92
Life cycle
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Previously
WithdrawnISO 13904:2005
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Now
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