GB/T 22261-2025 Active National standards

GB/T 22261-2025 Determination of virginiamycin in feeds

Publish Date: 2025-06-30 Implement Date: 2026-01-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 22261-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Animal and poultry feed and additives

ICS Name: \nFeeds

Publish Date: 2025-06-30

Implement Date: 2026-01-01

Pages: 16 pages

Scope

This document describes the methods for determining virginiamycin in feed using liquid chromatography-tandem mass spectrometry and high-performance liquid chromatography.
This document is applicable to the determination of virginiamycin (calculated as the sum of virginiamycin M1 and virginiamycin S1) in compound feed, concentrated feed, supplementary feed, premixed feed additives, and mixed feed additives.
The detection limit of the liquid chromatography-tandem mass spectrometry method in this document is 0.02 mg/kg, and the quantification limit is 0.05 mg/kg; the detection limit of the high-performance liquid chromatography method is 0.5 mg/kg, and the quantification limit is 1 mg/kg.