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Food-contact tests and standards on teaware, explained

茶具食品接触检测与国家标准详解

Chájù shípǐn jiēchù jiǎncè yǔ guójiā biāozhǔn xiángjiě

Traditional 茶具食品接觸檢測與國家標準詳解

A report is useful only when you know what was tested. Learn to identify the sample, test conditions and results before comparing product-quality standards with food-contact requirements.

On this page

Why a product standard and a food-contact safety standard are separate#

GB/T 10816-2024 is China’s recommended product standard for zisha ware, effective 1 July 2025. The revision removed the earlier lead and cadmium release requirements. For food contact, consult the applicable ceramic standard and a report for the particular sample.12

Key facts#

A product specification, a food-contact standard and a laboratory report are different documents. Read the edition, product category, tested sample, conditions and results together. A successful test of one submitted sample does not certify every pot sold under the same clay or kiln name.

What a regulatory sampling inspection and a lab leaching test actually do#

Chongqing’s 2026 inspection scheme takes six units per batch: four for inspection and two held in reserve. It lists sensory requirements under GB 4806.4-2016, lead migration under GB 31604.34-2016 and cadmium migration under GB 31604.24-2016. The reported outcome applies to the items checked.3

Five checks when a seller shows a laboratory test report#

Check five things: (1) the sample description, photograph or identifier matches the body, glaze and decoration; (2) the standard edition and test method fit the product and intended use; (3) exposure conditions, units, measured values and detection or quantification limits are stated; (4) the laboratory, report number, date and relevant accreditation can be verified; (5) there is a documented connection between the tested sample or batch and the offered object. “Not detected” is not a claim of zero content. Glazed, unglazed, high-fired and decorated are descriptions, not substitutes for these checks.

Further comparison#

  • What material is in the body? A composition analysis addresses that question.
  • What passed into the test liquid? Look for the migration result, its units and the exposure conditions.
  • Which vessel does the result cover? Match the sample number to the product or batch.

Related#

Learn

Buying a teapot: checks you can do yourselfHow to read a Yixing clay name

Clays

Purple sand clayChaozhou red clay

Wares

Yixing wareChaozhou wareJingdezhen porcelain

Sources#

  1. GB/T 10816-2024 紫砂陶器 (Zisha ware), standard recordSAMR national standards information platform · Standards · Accessed 2026-11-04 ↗
  2. 《紫砂陶器》国家标准宜兴日报 · 2025-07-03
  3. 重庆市食品接触用陶瓷产品质量监督抽查实施细则（2026年版）重庆市江津区市场监督管理局 (published on the Chongqing Administration for Market Regulation site) · Government and heritage records · Accessed 2026-11-04 ↗
  4. 李炳炎、林楠：《潮州茶器（1860—2020）》，暨南大学出版社，2022. ISBN 9787566832412.

    Bibliographic correction: the library copy is by Li Bingyan and Lin Nan, Jinan University Press, 2022. The former authors, publisher, year and claim of a complete reading were incorrect. Correcting this record does not verify every inherited claim citing it; those claims require passage-level review.

  5. DB4451/T 4—2023 潮州工夫茶艺技术规程（征求意见稿）潮州市市场监督管理局 (Chaozhou Market Supervision Administration); drafted by 潮州市茶艺协会 · Standards · Accessed 2026-11-04 ↗
  6. 潮州彩瓷烧制技艺 — 1332 / Ⅷ-218 (2014)China Intangible Cultural Heritage Network (中国非物质文化遗产网) · Government and heritage records · Accessed 2026-11-04 ↗
Status and editorial notes sources cited

Sources are listed below. Their presence does not certify every claim; source-specific interpretations and unresolved questions are identified in the text. This page has not received independent expert approval.