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See Chinese contents: GB 31604.56-2023 GB 31604.56-2023: National food safety standard - Food contact materials and products - Determination of laurolactam migration
This Standard specifies the method for determining the migration amount of laurolactam in food contact materials and products. This Standard is applicable to the determination of the migration amount of laurolactam in polyamide food contact materials and products. Method one -- Liquid chromatography
