Determination of ractopamine in feed by HPLC

Abstract The ractopamine in the sample was extracted with alkaline methanol, purified by an SLA solid phase extraction column, concentrated to a constant volume with a 2% acetic acid solution, separated and measured by high performance liquid chromatography-fluorescence detection after pas

Detailed introduction of UV inks by application

UV ink can be divided into two categories from the use, namely: UV printing ink and UV printed circuit board ink. At present, UV printing inks used in the printing industry are used in various printing fields such as offset printing, relief printing (including flexographic printing), gravu