2. Listen: The sound made by tapping the ceramic bowl gently, such as crisp and pleasant, indicates that the ceramic tire is fine and dense without cracks. When fired at high temperature, porcelain is complete. If the voice is hoarse, it can be concluded that the porcelain tire is cracked or the porcelain is incomplete. This kind of porcelain cracks easily when it changes hot and cold.
3. Comparison: For matching ceramic bowls, compare accessories to see whether their shapes and picture decoration are consistent. Especially a complete set of blue-and-white or blue-and-white exquisite porcelain, because the color of blue-and-white varies with the firing temperature, which is both blue-and-white porcelain and deep and light in color. A set of several or even dozens of complete sets of cold porcelain, if the blue and white colors are obviously different, this set of porcelain will be greatly inferior.
Extended data:
Precautions:
1. For newly bought ceramic tableware, if you don't know whether it is produced by a regular manufacturer, you can take it back and soak it in vinegar, which can remove most harmful substances and greatly reduce the potential harm to the human body.
2. In order to prolong the service life of ceramic tableware, newly bought ceramic tableware is boiled in salt water for a period of time at first, so that ceramic products will not be easily broken when used.
3. When using ceramic tableware, avoid sudden cooling, rapid heating and high temperature difference. For example, don't directly invade the heated porcelain bowl into cold water, so as to avoid damage or even breakage of porcelain due to rapid temperature change.
Baidu encyclopedia-porcelain bowl
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