This standard specifies the high-performance liquid chromatography (HPLC) determination method for the content of banned antibiotics metronidazole and norfloxacin in toothpaste. This standard is applicable to the determination of the content of banned antibiotics metronidazole and norfloxacin in toothpaste. The detection limit of this standard method is 1mg/kg.
GB/T 40189-2021 Referenced Document
GB/T 6682 Water for analytical laboratory use.Specification and test methods
GB/T 40189-2021 history
2021GB/T 40189-2021 Determination of metronidazole and norfloxacin in toothpaste—High performance liquid chromatography method