In regular supermarkets, shopping malls generally don't buy porcelain bowls made by small factories.

The lead content of porcelain can't be accurately determined by naked eyes. Porcelain glaze contains no lead, and glaze color is the source of lead. Therefore, the tableware and drinking utensils should be selected with underglaze color, which can reduce the amount of lead leaching. Lead glaze is fired at low temperature, usually green \ yellow or yellowish brown.

and the black bottom of the bowl is because the enamel is too thin to be cleaned easily, so it can be used to hold solid and dry things.

It also shows that the quality of porcelain bowls is not good, the surface smoothness is not enough, and it is easy to accumulate tiny particles such as pigment, which is not easy to clean; Or the food you put will have color after soaking, and it is normal to leave color in the bowl after boiling. You can wet the bowl and take a proper amount of toothpaste to wash it.

If the tableware used for a long time is found to have reddish-brown substance oozing out, it should not be used for eating or drinking.

It's best to buy white ones instead of flowery ones, because all the colors on porcelain bowls contain lead, especially bright colors, but many bowls are underglaze colors, so this process will be better. When people often drink milk, in order to save trouble, they pour the milk into porcelain cups and put it in the microwave oven for heating. As everyone knows, many rough porcelain vessels with painted cups and bowls contain extremely high lead. If they are heated in the microwave oven, the microwave will bring lead into the milk and invade the body.

when cleaning ceramic tableware, use a soft rag, while scouring pad and decontamination powder are easy to scratch the surface of tableware and are more susceptible to pollution, so it is best not to use them. At the same time, try not to hold acidic, oily and alkaline foods for a long time during use, especially don't put porcelain tableware with oily foods in the microwave oven to prevent toxic substances from precipitating. If you want to put it in the microwave oven, you should avoid metal decoration, such as porcelain tableware with Phnom Penh and silver edges or inlaid patterns with golden paper, metal wire and metal wire.

how to choose porcelain tableware?

The main hazards of porcelain tableware are heavy metals such as lead. So it's best not to buy brightly colored tableware. If you must buy tableware with colors, you should buy underglaze ones. The underglaze ones can only be used for decoration, not as utensils. As long as the others are beautiful, neat and meticulous. You can buckle the bowl to the table. If it is unqualified, there is a gap at the edge of the bowl.

A good porcelain bowl is white, light and thin, very round, and expensive. A small bowl costs more than ten yuan. The poor quality is cheap, the appearance is rough, heavy, and the shape is uneven. Only one small bowl is left and right in 1 yuan. As long as the economy allows, it is better to buy brands, and the quality is much better.