Glass products China GB4806 test report process
Date：2025-12-10 10:49:03 Classification
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Conducting GB4806 testing on glass products indeed requires adhering to standardized procedures, which is a crucial step in ensuring that the products meet China's food contact safety standards. The process of obtaining a GB4806 testing report for glass products in China mainly consists of four major stages, with clear operational points for each stage.
Phase 1: Clarify testing standards and scope
Firstly, it is necessary to confirm the specific standards corresponding to the product. Glass products are mainly subject to GB 4806.5-2016 "National Food Safety Standard Glass Products", which covers the following scope of application:
- Glass tableware (bowls, plates, cups, bottles, etc.) that come into direct contact with food
- Glass containers for food packaging (spice bottles, canned food bottles, etc.)
- Glass kitchenware (baking trays, food storage containers, etc.)
Note: If the product contains accessories such as metal lids and plastic sealing rings, additional testing is required based on the material of the accessories (e.g., GB 4806.9, GB 4806.7).
Stage 2: Sample preparation and inspection submission
1. Sample requirements
- Quantity: For products from the same batch, made of the same material, and processed using the same technique, 6-10 complete samples are required (the specific quantity should be as per the laboratory's requirements, and additional spare samples may be needed for special shapes)
- Condition: It must be an unused, brand-new product with no stains or scratches on the surface and intact packaging
- Materials: Product manual, material specification (such as soda-lime glass, borosilicate glass), brief description of production process (such as whether it contains glazing, coating) are required
2. Select a testing institution
A laboratory with CMA qualification and recognition of GB 4806.5 standard (such as Deze Wei Testing, CNAS registration number: L8083) should be entrusted. Its qualification can be verified through the official website of the Certification and Accreditation Administration of the People's Republic of China.
Phase III: Core Test Items (Based on GB 4806.5-2016)
The laboratory will conduct the following key tests according to standard requirements:
| Test Item | Detection Purpose |
| Lead (Pb) migration | Prevent heavy metal leaching from contaminating food
| Cadmium (Cd) migration | Control the release of toxic elements
| Arsenic (As) migration | Detection of harmful element leaching
| Migration of antimony (Sb) | For antimony-containing glass (such as certain heat-resistant glass)
| Heat shock resistance | Simulated rapid cooling and heating scenarios (such as encountering cold water after holding hot soup)
| Water resistance | Test the chemical stability of glass (change in pH value of immersion solution)
| Wear resistance of inner surface | Prevent harmful substances from releasing after wear
Special situation: If the glass contains glazing, printing, or coating, additional testing for heavy metal migration in the glazing is required (according to the glazing requirements in the ceramic standard GB 4806.4-2016).
Stage 4: Report issuance and result application
1. Inspection cycle
- Regular items: 5-7 working days (excluding sample mailing time)
- Special projects (such as thermal shock resistance and wear testing): may be extended to 10-15 working days
2. Report content
The qualified report must include:
- Product information (name, model, batch, material)
- Test basis (clearly marked as GB 4806.5-2016)
- Test items and results (each indicator should be marked with "conforms to standard" or specific numerical value)
- Laboratory qualification (CMA seal, report number, testing date)
3. Application of results
- Production and sales: The report serves as proof of product compliance and can be used for domestic market access and listing on e-commerce platforms
- Import customs clearance: Customs may require a GB 4806 inspection report. Failure to pass the inspection will result in return or destruction
- Periodic update: It is recommended to conduct a re-inspection for each batch or annually. If there are changes in the process or raw materials, re-inspection is required
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