How to identify the authenticity of Zisha mud

A fine clay pot is very critical, after all, the premise of drinking tea is healthy. However, the current Zisha mud is complicated, and many of the Zishahu's raw materials are zisha-like clays. How can the potters distinguish between the purple mud and the muddy material?

First, see the density. Different densities result in different weights of the same size teapot. Different oxides and proteins in minerals lead to different densities of fired purple sand, and the clays are heavier. However, when the real purple sand mud is burned, agglomerates are formed in the internal wall structure, and bubbles are formed. Therefore, the density is slightly lower. Get a little lighter.

Second, look at the texture. The true purple clay pot is like a red bean paste. The fine purple sand still looks like a semi-suspended grain. It doesn't feel too smooth, but it doesn't handle it. The purple clay is astringent. The sense, but mixed with chemical raw materials is too smooth.

Third, listen to the sound. Zisha differs from porcelain in that it does not require special glazing. After sintering, the surface of the slurry will naturally form an epidermis with a "slime" pulp that is attached to the surface. It is water-tight but breathable. The sound transmission is not as crisp as porcelain, but it is not boring. Boring.

Fourth, look at the color. The real raw material Zisha mud is dark in color and has a slight burr on the surface. If a teapot is bright and bright, it is most likely to be oxided or polished.