Ceramic itself is soil, which contains a series of fine hotbeds. The composition of the soil is directly exposed to the cracks in the ceramics, and the bacteria contained in it are not easy to wash off, so it is recommended that you do not use this porcelain bowl for a long time.
Glass is relatively better, because the composition in the crack is still glass.
Materials harmful to human body:
1, plastic tableware (plastic tableware includes polyethylene, polystyrene, polypropylene plastic products, etc. )
2, copper tableware (copper rust can produce "copper rust", that is, alkaline copper acetate) and blue alum (that is, copper sulfate. Tongluo and blue alum are two toxic substances, which can cause nausea, vomiting and even poisoning.
3, aluminum tableware (too much aluminum accumulated in the human body will accelerate the aging of the human body, which is not good for health)
4. Lacquered chopsticks (Lacquer is a macromolecular organic compound, and most of them contain toxic chemical components, such as yellow lacquer with lead content accounting for 64% of the total pigment and chromium content of 16. 1%. Eating with painted chopsticks for a long time, especially when paint falls off and enters the stomach with food, and toxic substances such as lead and chromium enter the human body and accumulate, which is in danger of chronic poisoning)
In addition, I would like to remind you that some decorative patterns of tableware and some brightly colored plastic tableware have potential safety hazards. I suggest that when you choose, try to choose products with no decorative patterns or simple patterns, which are not on the inner wall of tableware and are colorless and tasteless.
Glad to help you!