GB/T 14700-2018: Determination of thiamine in feed

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Scope

This Standard specifies two methods for the determination of thiamine B1 in feed,
including fluorescence spectrophotometry and high performance liquid
chromatography.
Method I of this Standard applies to the determination of thiamine B1 in feed material,
compound feed and concentrated feed. The quantitation limit of this method is 1 mg/kg
(in case of the existence of any interfering substance which absorbs thiamine or
influences thiamine fluorescence, this method is not applicable). Thiamine B1
determined in this Method includes the total of intrinsic and additive amounts.
Method II of this Standard specifies the determination of compound premixed feed and
thiamine premixed feed. The detection limit of method II is 3 mg/kg; the quantitation
limit is 15 mg/kg.

Basic Data

Standard ID	GB/T 14700-2018 (GB/T14700-2018)
Description (Translated English)	Determination of thiamine in feed
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	B46
Classification of International Standard	65.120
Word Count Estimation	9,943
Date of Issue	2018-05-14
Date of Implementation	2018-12-01
Older Standard (superseded by this standard)	GB/T 14700-2002
Regulation (derived from)	National Standards Announcement No. 6 of 2018
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration