Purchase of ceramic tableware

Ceramic tableware is the first choice for most families to buy tableware with diverse shapes, exquisite and smooth, bright colors and easy cleaning. However, the colored glaze on the ceramic surface may become a health killer. Lead, mercury, radium, cadmium and other elements in the colored glaze are harmful to the body. The radioactive element radium can kill white blood cells. Cadmium, lead and mercury are heavy metals. Cadmium and lead can cause liver or other visceral poisoning, and mercury can cause liver and kidney sclerosis. When using unqualified ceramic products, these harmful substances will be dissolved, and as food enters the human body, it will cause chronic poisoning for a long time. At the same time, attention should also be paid to the clay used for making ceramics. Poor clay contains more microorganisms and harmful substances. Even if it is not glazed, it will damage human health. Therefore, the specification and quality of the product are particularly important. The standard colored glazed ceramics are basically harmless to human body, while the seemingly clean colorless ceramic tableware may lay hidden dangers for health.
When purchasing and using ceramic tableware, pay attention to the following points:
1. To buy ceramic tableware, you must choose a regular market. You must not buy inferior products without a formal manufacturer at a low price. According to the national regulations, when ceramic tableware is soaked in 4% acetic acid, the dissolution of lead shall not be greater than 7 mg/L, and the dissolution of cadmium shall not be greater than 0. 5 mg/L. At present, the products of regular manufacturers can basically meet this requirement;
2. Pay attention to the quality of the tableware when purchasing, touch the surface of the tableware with your hand to see if the inner wall is smooth and clean;
3. Smell whether there is any peculiar smell with your nose;
4. Don’t buy ceramic tableware with too bright colors. In order to make the color bright, the manufacturer will add some heavy metal additives into the glaze. Therefore, the brighter the color of the tableware, the easier the heavy metal is to exceed the standard;
5. We should buy underglaze and underglaze color tableware with strict raw materials and process control;