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See Chinese contents: GB/T 40266-2021 GB/T 40266-2021: Quality general rules of oxides barrier transparent plastics laminated films and pouches for food packaging
This Standard specifies high performance liquid chromatography (HPLC) method to determine the content of restricted preservatives - sorbic acid and benzoic acid - in toothpaste. This Standard is applicable to the determination of the content of restricted preservatives - sorbic acid and benzoic acid - in toothpaste. The method detection limit of this Standard is 0.5mg/kg.
