Five look:
See whether the product is deformed, whether the parts assembled with the synthesizer are consistent, whether the thickness is symmetrical and whether it is stable on the plane.
Second, look at whether the glaze of the product is smooth and bright, whether the glaze color is pure and uniform, whether there are defects such as spots, convex seeds, rotating blank lines, pinholes, etc., whether the mouth edge is neat, and whether the glaze color of batch products is consistent.
Third, look at whether the product is light and transparent, and whether it is as rich as jade under the light. Low-grade porcelain is generally heavier and has poor light transmittance. The lighter, thinner and more transparent porcelain is, the better, the more difficult the manufacturing process is, and the lower the yield is, so the more upscale the product is.
Fourth, whether it is a work or a decal product. Modern works usually have the author's inscription next to the main picture, and often have the proof of the author's signature. The picture is not neat with decals (if there are several pieces of porcelain with exactly the same decorative patterns, it is definitely not a work).
Fifth, look at whether the decorative pattern is the best match with the vessel type, whether the decorative pattern is grand, vivid and reasonable in layout, and whether the implication of the vessel type and decorative pattern complement each other. Whether the manual decoration process is fine and perfect.
Second, listen:
Put the porcelain on a flat surface or on the palm of your hand, and then tap its edge with a hard object, such as a crisp and pleasant metallic sound. The longer the lingering sound, the better the fetal quality, that is, "the sound is like a fragrance." Then tap the picture or flower surface with your nails and listen to the sound of empty eggshells. If yes, the surface layer is separated from the porcelain tire.
Touch:
Touch (preferably "touch" with your face) the surface, mouth and feet of porcelain to see if it feels smooth and comfortable.
Scratches:
Scraping glaze and pictures with nails or rough hard objects, especially where gold is painted or pasted, if there are scratches or even scraped off, it must be inferior porcelain.
Second, the internal quality:
Through chemical testing, to see whether it meets the international and domestic standards of lead and cadmium dissolution allowed by food containers.
Through physical inspection, that is, through rapid cooling and rapid heating (such as boiling water and refrigerator freezing), the product is inspected to see whether the carcass is cracked, whether the glaze falls off and cracks, and whether its thermal stability reaches the standard.
In a word, good artistic ceramics should be of excellent quality, exquisite appearance, rich connotation, profound implication, elegant taste, environmental protection and practicality.
-Copyright: Dexing Ceramic Industry Planning Department www.dx318.com.