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EVS-EN ISO 13904:2016

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

General information

Valid from 04.04.2016
Base Documents
ISO 13904:2016; EN ISO 13904:2016
ICS Groups
65.120 Animal feeding stuffs
Directives or regulations
None

Standard history

Status
Date
Type
Name
04.04.2016
Main
EVS-EN ISO 13904:2016
06.07.2005
Main
EVS-EN ISO 13904:2005
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.

Required fields are indicated with *

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Standard monitoring
English (PDF 318 KB)

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EVS-EN ISO 13903:2005

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Standards designation

EVS Estonian standard
EN European standard (published by an CEN or CENELEC)
EN ISO International standard adopted as an European standard
ISO International Organization for Standardization’s standard
IEC International Electrotechnical Commission’s standard
HD CENELEC’s harmonisation document
   
EVS-EN European standard implemented in Estonia
EVS-EN ISO International standard adopted in Europe and implemented in Estonia
EVS-EN ISO/IEC International standard/International electrotechnical standard adopted in Europe and implemented in Estonia
EVS-IEC International electrotechnical standard implemented in Estonia
EVS-ISO International standard implemented in Estonia
   
A, AMD amedment
+A a full standard plus the amendment
/A only amendment
COR, AC corrigendum
+COR a full standard plus the corrigendum
NA national annex
+NA a full standard plus the national annex
/NA only national annex
TS technical specification
TR technical report
CWA agreement, developed by a CEN or CENELEC
prEVS-EN (etc) draft standard
   
et the standard is in Estonian only
en the standard is in English only
et-en the standard is in Parallel text Estonian-English