[Purple Sand Insulation Cup]Is the Zisha Insulation Cup good and how to identify the true and false Zisha Insulation Cup
Does the Zisha Insulation Cup keep warm for a long time >
The thermal insulation effect of the purple sand thermos cup is not as good as that of the professional double-layer stainless steel thermos cup. Generally speaking, the thermal insulation effect of the purple sand thermos cup is less than 6 hours.
However, the purple sand thermos cup not only has the basic functions of the stainless steel thermos cup, but also can make tea, which has the functions of health preservation and conditioning. The inner liner of the purple sand thermos produced by regular manufacturers is generally made of authentic pure natural purple sand mud (less production), and the outer shell is usually made of stainless steel that is anti-fall and anti-knock. In addition, the purple sand vacuum flask has strong adaptability to the rapid changes in cold and heat. Whether it is cold in winter or in the hot summer, after boiling water is injected, it will not burst due to the rapid temperature change, and the sandy vacuum flask is slow in heat transfer and not hot.
The stainless steel thermos cup is not suitable for making tea and coffee. Because tea leaves are soaked in warm water in a thermos for a long time, just like a mild fried egg, the tea polyphenols, tannins and other substances contained in the tea leaves will be leached out in large quantities, making the tea water thick in color and with a bitter taste. In addition, because the water in the thermos cup will always maintain a high water temperature, the aromatic oil in the tea will volatilize quickly, which also reduces the fragrance of the tea. The most serious point is that nutrients such as vitamin C contained in tea will be destroyed when the water temperature exceeds 80 ℃, and the health care function of tea will be lost.
What materials are there for the inner liner of the thermos?
Glass thermos, healthy but not drop-proof. The reason why glass thermos cups are safer is that glass is sintered from inorganic silicates, which is a very stable substance, that is, the bad impurities contained in the production process will not leak out. And the glass is easy to clean, so it is the safest to use the glass. However, glass tea has the disadvantage of being easily broken, so it is not convenient to use it with you.
There are not many ceramic thermos cups in the thermos cup industry. Ceramic cups are completely harmless. It will not be like metal cups and plastic cups. Long-term use will cause ingestion of metals and other substances. possible.
Plastic thermos cups
Usually the plastic thermos cups on the market can only have the function of heat insulation, and the function of heat preservation can only be There are 2 to 3 hours, the lower the room temperature the faster the heat loss. Plastic thermos cups can also be kept warm, but the insulation time of plastic cups is far from that of stainless steel and ceramic thermos cups, which is not suitable for use in autumn and winter. According to experts, long-term use of plastic cups may cause cancer.
Is it harmful to drink water in inferior purple sand cups?
The inferior purple sand cups are added with chemical materials. That may affect people’s health. The presence of lead, chromium and other heavy metal substances that are harmful to health in the inferior purple sand! There are also chemical pots, manganese will also directly cause damage to the human liver, and the chemicals and metal elements in the inferior purple sand pot will be in the high temperature tea. After brewing, it is separated and taken into the body! In the long run, it will damage the human liver organs.
The natural purple sand cup is made of purple sand, and of course its characteristics are almost the same as those of purple sand. The purple sand material has excellent air permeability, and it has the advantages that the tea is not easy to smell, and the tea leaves are not easy to deteriorate, making the tea soup more mellow and delicious.
How to identify the true and false purple sand vacuum flask
(1) First, look. Look at the surface first. Since it is clay and not glazed, the surface of the new Zisha cup cannot be bright, but rather rough. In order to sell well, fake clay pots are usually waxed and polished.
1. Zisha mud contains trace elements such as quartz and mica, which will form crystals during high-temperature firing. Therefore, under the light, many fine silver-white bright spots can be seen on the entire pot body.
2. The inner and outer colors of the real purple sand cup are almost the same, and the difference will not be too big.
(2) The second is to test with boiling water. Pour the freshly boiled water into the cup and pour it along the body of the pot, cover the lid, you will see that the water does not flow down, but is slowly sucked dry; the lid of the cup is first slowly moistened , and then Yi slowly sucked dry. This is the performance of the purple sand cup with double-layer pores and good air permeability.
(3) The third is to leave the brewed tea in the cup. The tea will not turn rancid in two or three days. The identification method of knocking the body of the pot with the lid to listen to the sound is actually unscientific. Because of the difference in shape and mud, the sound will also be different. Moreover, adding glass water to the fake mud can also knock out a sound similar to the real mud. The greater effect of tapping and listening to the sound is to identify whether there are hidden cracks in the cup body.
