GB19965-2005

The fluride content of brick tea

砖茶含氟量

GB 19965-2005 est une norme nationale chinoise obligatoire en vigueur : The fluride content of brick tea. Secteur : Alimentation. Thème principal : Sécurité des produits. Entrée en vigueur : 1 mai 2006.

L’applicabilité dépend du périmètre du produit, de la voie de certification, des avis des autorités et des règles de transition. Demandez une traduction ou vérifiez la source avant d’utiliser cette fiche pour une décision de conformité.

Aperçu de conformité

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Champ d’application

This standard applies to the monitoring and supervision of fluoride content in the production and sales of brick tea (also known as compressed tea or border-sale tea). It is also applicable for health departments evaluating the prevention and control of tea-drinking type endemic fluorosis. It is mandatory for all brick tea manufacturers and distributors in China. The standard covers various types including Hei brick tea, Fu brick tea, and Qing brick tea.

Exigences techniques

GB 19965-2005 specifies the maximum allowable limit of water-soluble inorganic fluoride in brick tea products. The total fluoride content must not exceed 300 mg per kilogram of brick tea. This requirement is established to mitigate health risks associated with excessive fluoride intake from tea consumption. The standard defines brick tea as a category of compressed teas, including Kang brick tea and Mi brick tea, among others. Compliance with this mandatory limit is essential for market access in China.

Méthodes d’essai

The standard mandates the use of the fluoride ion selective electrode method for determining the fluoride content in brick tea. The testing procedure involves sample preparation according to GB/T 8302-2002, followed by extraction using a boiling water bath. The measurement utilizes a total ionic strength adjustment buffer (TISAB) and specific electrodes to determine the equilibrium potential, which is then calculated against a standard curve to find the exact fluoride concentration.

Questions fréquentes

What is the maximum allowable fluoride limit under GB 19965-2005?

The standard strictly mandates that the fluoride content in brick tea must not exceed 300 mg/kg.

What types of tea are covered by GB 19965-2005?

It covers various types of brick tea (compressed tea), including Hei brick tea, Fu brick tea, Hua brick tea, and Qing brick tea, among others.

What testing method is specified in GB 19965-2005?

The standard requires the use of the fluoride ion selective electrode method for accurate measurement of water-soluble inorganic fluoride.

The summary above provides a high-level overview of GB 19965-2005. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 19965-2005 today to access all detailed parameters, tables, and testing procedures.

Indications d’applicabilité

Type: Santé et hygiène
CCS: C53
ICS: 01.040.11
Autorité compétente: National Health Commission
Comité technique: National Health Commission