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What are the testing items for metal German LFGB food contact materials?

Date:2024-08-07 10:57:03 Classification :【question】 Visits:
When conducting metal testing on German LFGB food contact materials, the main testing items include heavy metal dissolution testing. Specifically, it is necessary to detect the dissolution of 23 heavy metals in deionized water (DI water) and 0.5% citric acid to simulate the chemical reactions that may occur when in contact with water-based, alcohol and oil products. . In addition, 7 heavy metals (nickel Ni, cadmium Cd, chromium Cr, lead Pb, cobalt Co, copper Cu, antimony Sb) need to be tested for dissolution, which is based on older standards. For products made of specific metals such as stainless steel, aluminum and aluminum alloys, it is also necessary to follow the general requirements for metals and conduct composition analysis to ensure compliance with relevant standards.

When testing is carried out, sensory testing is also carried out to assess whether the product transfers odor or taste to food, which is carried out according to the DIN10955:2004 standard. In addition, testing for volatile organic compounds (VOC) is also optional. According to the EN14372-2/EN14350-2 standard, the limit of volatile substances is 0.005, while the more stringent limit is 0.001.

It is worth noting that LFGB testing is not only for metals and alloys, but also includes ceramics, glass, enamel, paper and cardboard, plastics and other materials in contact with food. Through these tests, we can ensure that products will not release substances harmful to human health when in contact with food, ensuring food safety.


Metal German LFGB food contact material testing process:

1. Sample preparation: Randomly select standardized samples that meet the specified requirements from mass-produced metal products, and perform preprocessing such as cleaning and drying.

2. Material identification: Conduct component analysis on the raw materials of metal products to understand their composition and detect their physical properties, such as density, hardness, etc.

3. Hazardous substance detection: Focus on detecting heavy metal elements that may be contained in metal products, such as lead (Pb), cadmium (Cd), cobalt (Co), etc., and conduct dissolution testing to evaluate the impact of these heavy metals in simulated food environments Amount of precipitation.

4. Migration test: Use appropriate simulated liquids to conduct migration tests under different conditions to evaluate the substances that may be released by metal products when they come into contact with food.

5. Chemical property testing: may include testing of chemical properties such as pH value, antioxidant performance, solubility, etc. of metal products.

6. Physical property testing: Evaluate the physical properties of metal products such as heat resistance, oil resistance, and mechanical strength.

7. Sensory evaluation*: Evaluate the possible odor and taste transfer caused by metal products during use to ensure that they will not have adverse effects on food.

8. Test report: Prepare a detailed test report based on the test results, including test conditions, results and conclusions. If the product meets the LFGB standards, it will obtain a certification mark or certificate of conformity and be allowed to be sold in the German market.

9. Application and evaluation: The applicant provides sample information or directly provides samples, and the testing agency evaluates the samples and provides test standards and projects as well as related costs.

10. Test execution: The applicant provides samples after accepting the test conditions. The testing agency conducts the test in accordance with the test standards and issues an LFGB test report after passing the test.

The entire process ensures the safety and compliance of metal food contact materials to meet regulatory requirements for the German market.


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