Judge whether the disinfection tableware contains lead?

We all know to buy sterilized tableware, do not choose colorful and deep colors, and do not buy flowers inside, because these colorful dishes contain heavy metals: lead. However, the content of different manufacturing color methods is also different. Let's understand together. In the manufacturing technology of disinfection tableware, porcelain tableware is divided into three types: overglaze color, underglaze color and underglaze color. The overglaze color is painted on the glaze, that is, it is baked on the surface of the burned white porcelain with decorative paper. The underglaze color is the underglaze color, the pattern is covered by the glaze layer, and the color in the glaze is mixed with the color. Because the color glaze pigment is rich in harmful metals such as lead and cadmium, the above glaze color has lower manufacturing cost and is safer. Long-term use of glazed color technology manufacturing tableware containing vinegar, vegetables and other foods with high content of organic acids, heavy metals will enter the human body together, overnight will cause slow heavy metal poisoning, reduced immune capacity, and blood system diseases, etc. After buying back porcelain disinfection tableware, it is recommended to boil the tableware with boiling water for 5 minutes. Boiled water can play a role in sterilization, and then soak it in normal temperature vinegar for 1- 2 hours, because ceramics will separate some poisons when they encounter acidic substances. For the tableware that is not at ease, you can soak it in vinegar for a few hours. If you find that the color changes significantly, you should abandon it. Long-term use of lead-containing sterilized tableware will undoubtedly cause great harm to human body, so we must polish our eyes when purchasing and using it.