What Is The Basis For Ceramic Tableware

Although the painted colors on the inner wall of ceramic tableware are bright, the glaze contains heavy metal elements such as lead, mercury, and cadmium. Among them, cadmium and lead are easy to cause liver or other internal organs poisoning, while mercury can cause liver and kidney sclerosis. The more glaze colors of ceramics, the brighter the color, and the more compounds such as lead and cadmium.
Health advice: Don't pay too much attention to the patterns when choosing ceramic tableware, especially don't use bowls and plates with painted inner walls. Newly bought tableware can be soaked in vinegar for 2 to 3 hours to dissolve harmful substances in the glaze. In addition, colored porcelain should never be heated in a microwave.
Underglaze colored porcelain is the safest, with more blue and green patterns and less red and yellow
Underglaze color is to apply pigment first, then glaze, and then directly fire at high temperature. Since low melting point substances are not required, lead does not need to be added to the pigment, and the pigment is not easy to precipitate, which is the safest; glaze color is to apply glaze first, then paint, and then fire at high temperature. It does not contain lead, and the pigment is difficult to precipitate, which is relatively safe.
The patterned areas on underglaze paint feel as smooth as other areas and have a very good gloss, while the in-glaze paint is somewhere in between the two. Although it has a better gloss, it does not feel smooth.