scope:

This International Standard specifies a high-performance liquid chromatographic (HPLC) method for the determination of monensin, narasin and salinomycin content of animal feeding stuffs, supplements (dry and liquid), and mineral premixtures. The method is not applicable to drug premixes pharmaceutical products). Lasalocid and semduramicin cannot be determined by this method. The limit of quantitation is approximately 1 mg/kg, 2 mg/kg and 2 mg/kg for monensin, salinomycin and narasin, respectively. A lower limit of quantitation may be achievable but this must be validated by the user.