The ceramic bowl is made of a kind of clean white clay, which is sterilized at high temperature and non-toxic.
Usually used ceramic bowls are made of fired clay and a layer of glaze water. Before firing, glaze water usually contains red lead, commonly known as arsenic. After special process firing, red lead will be transformed into harmless lead chemicals, so qualified ceramic tableware is harmless to human body.
Distinguish the quality of ceramic bowls;
1, hold the ceramic in your hand and observe it. A good ceramic color is a natural milky white unique to natural bone powder. Observe the permeability of ceramics under strong light to see if the composition of the cup is meticulous. Good ceramics should have good light transmittance and be uniform without impurities.
2. Feel the delicacy and hardness of porcelain with your hands. With the addition of bovine bone powder, the weight of ceramics will be lighter than other kinds of porcelain, and the finished products will be light, thin and hard (twice as hard as daily-use porcelain) and will not be broken easily.
3. With a flick of your index finger and thumb, you can hear the crunchy sound of ceramic. If you rub your hands on the bowl with water, it will make a sound like an airplane flying by. Of course, the voice is relatively low, so listen carefully.