Ceramics are a traditional cultural embodiment of the Chinese nation, but they are also loved by many people due to their unique temperament. They are also favored by young people who value convenience and pursue fashion, as they are easy to clean, acid and alkali resistant, and convenient for high-temperature disinfection, steaming, boiling, burning, and baking of food. Ceramic vessels with beautiful shapes and decorations are not only practical but also aesthetically pleasing, making them essential for daily life. However, when it comes to purchasing, many people are attracted by a beautiful appearance. We should not blindly pursue appearance, and paying attention to health is the key.
Ceramic appearance quality
Consumers can first check the product name and grade indicated on the packaging box or documents inside the box; Secondly, the physical quality of the product can be observed with the naked eye. When purchasing, it is advisable to choose products with no obvious surface defects and regular ceramic shapes. Plate and bowl products can be stacked together with several products of the same size and size, and the distance between them can be observed. Uneven distance indicates irregular shape and large deformation. For a single product, it can be placed flat or reversed on a glass plate to check if it matches the glass plate and determine its deformation size. For porcelain products, you can hold them in your hand and lightly tap the edge with your fingers. If there is a hoarse sound, it indicates the presence of cracks.
Lead and cadmium leaching amount
The lead leaching and cadmium leaching of underglaze and underglaze colored products are very low or almost non-existent, and can be purchased. When selecting glazed colored products, the following methods can be referred to:
For utensils used to hold food, products with fewer decorative patterns on the contact surface with the food should be selected.
2. Pay attention to whether the pattern color is bright. If it is not bright, it may be due to the temperature not meeting the requirements during flower baking. The lead and/or cadmium leaching of such products is often high.
3. Pay special attention to products that can be wiped off with your hands, as most of these products have high levels of lead and/or cadmium leaching.
4. For products that are not reassuring, they can be soaked in vinegar for a few hours. If there is a significant change in color, they should be discarded.
