Krmiva: Metody vzorkování a analýz - Stanovení gossypolu v semenech bavlníku a krmivech pomocí LC-MS/MS (Norma k přímému použití jako ČSN).
NORMA vydána dne 1.9.2022
Designation standards: ČSN EN 17504
Classification mark: 467067
Catalog number: 514980
Publication date standards: 1.9.2022
The number of pages: 24
Approximate weight : 72 g (0.16 lbs)
Country: Czech technical standard
Kategorie: Technické normy ČSN
This document specifies a method for the determination of free gossypol, extractable by acidified acetonitrile/water, in cottonseed, cottonseed products and compound feeds by liquid chromatography with tandem mass spectrometry (LC-MS/MS). The method described in this document has been successfully validated in the range of 69 mg/kg to 5 950 mg/kg by collaborative trial in the following matrices: cottonseed, cottonseed products (cake/meal, hulls) and compound feeds for bovine, porcine and poultry. NOTE - It is possible to reach quantification limits of approximatively 5 mg/kg in compound feeds. The method might be applicable at lower and at higher concentrations than the concentration range validated in the collaborative trial. However, this needs to be assessed by in-house validation