Would you like a cup of tea or a purple clay cup?
The teapot inside and outside is not a glazing material has excellent physical and chemical properties of tea, can play a very good harmonic function, can maximize the tea in the tea and tea, and a long time to keep fresh, not easy to change. When the teapot is made of tea, the tea juice gradually penetrates into the wall of the pot and brings the effect of blending tea tannin. And tea through the purple sand will have moisture effect, the extract will not have any adverse effects. The teapot is used for a long time can increase product "tea stain", by the Shanghai Institute of biological research laboratory, containing griseofulvin ingredients have anti-inflammatory, tea stain, disinfection effect, so the teapot tea is not necessary to wash the wall. Purple sand contains a wealth of iron elements, such as some of the ingredients beneficial to the human body, often used, with health care function, so the "purple sand pot" in foreign countries, "non-toxic tableware" laudatory title
The coefficient of linear expansion of the purple sand pot is slightly higher than that of the porcelain, but because of the lack of glaze inside and outside the table, the stress of the blank glaze is not taken into account. Alumina content in raw material with high mechanical strength, make the teapot with thermal shock resistance and high, can overcome the stress produced by thermal shock. So the severe winter, into the boiling water will not burst. Once the teapot is not used for a long time, it also forgets to pour out the residue and leave it out of smell. As long as it is soaked in boiling water, it will be taken out and immersed immediately in cold water. So again, with the wall of the kettle hole thermal expansion and contraction, double porosity pot wall can produce replacement function in cold and hot shock, eliminate odor.
Both are OK. The teapot is better.
Teapot tea is not easy to deteriorate hair rancid, first from the Yixing material excellent permeability. Secondly, due to the close fitting of the pot made of purple sand, the air flowing with aflatoxin is reduced to the channel in the pot, so the time of the tea liquor deterioration is delayed correspondingly. This is due to the shrinkage of small purple mud, scaly, molecular arrangement, firing is not easy deformation; and the teapot mouth, can cover the production of fine, close cooperation, tolerance is generally under the control of the displacement is less than 0.5 mm, and the porcelain teapot cover displacement tolerance usually between 1~3 mm, even more.
