Ceramic products China GB4806 food contact material testing
Date：2025-04-18 10:54:14 Classification
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According to your needs, the following is relevant information about the GB4806 food contact material testing of ceramic products in China:
1. Standard Overview
GB4806.4-2016 "National Food Safety Standard Ceramic Products" is a safety standard formulated by China for ceramic products for food contact. The standard aims to ensure that ceramic products will not contaminate food under normal use conditions, thereby protecting the health and safety of consumers.
2. Scope of Application
GB4806.4-2016 standard applies to all ceramic materials and products that are expected to come into contact with food, including but not limited to:
- Tableware (bowls, plates, cups, etc.)
- Cookware (pots, pots, etc.)
- Food storage containers
3. Testing requirements
3.1 Heavy metal migration
Ceramic products may use glazes containing heavy metals during the production process, and these heavy metals may migrate into food during use. The standard specifies the following limits for heavy metal migration:
- Lead (Pb) migration: ≤0.5 mg/L
- Cadmium (Cd) migration: ≤0.25 mg/L
3.2 Sensory requirements
In addition to the requirements for chemical properties, ceramic products must also meet sensory requirements to ensure that they do not adversely affect the color, smell and taste of food. The specific requirements are as follows:
- Normal color: ceramic products should have uniform color without obvious color difference
- No odor: ceramic products should not emit any odor during use
- No foreign matter: the surface of ceramic products should be smooth without obvious impurities, stains or other defects
4. Detection method
4.1 Heavy metal migration detection
The detection of heavy metal migration usually adopts the following methods:
1. Sample preparation: Select representative ceramic product samples, clean and dry them
2. Migration test: Soak the sample in a simulated food solution, such as aqueous, acidic, alcoholic or oily solution, and perform the migration test at the temperature and time specified in the standard
3. Chemical analysis: Use instrumental analysis methods such as atomic absorption spectroscopy (AAS) or inductively coupled plasma mass spectrometry (ICP-MS) to detect the heavy metal content in the solution
4. Result determination: Compare the test results with the standard limit to determine whether the sample meets the requirements
4.2 Sensory property testing
Sensory property testing mainly relies on visual, olfactory and taste evaluation:
1. Color inspection: observe whether the color of the ceramic product is uniform and consistent
2. Odor inspection: smell the ceramic product to see if there is any odor
3. Surface inspection: check whether the surface of the ceramic product is smooth and free of obvious impurities, stains or other defects
4. Result judgment: judge whether the sample meets the sensory property requirements according to the standard requirements
I hope the above information is helpful to you. If you have more specific questions or need further detailed information, please feel free to let me know.
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