Copper tea leaks are all black.

Hello, what is the reason for the black leakage of copper tea? The reason why the copper tea leakage is completely black is that it is easy to oxidize to form high-valent iron ions when making tea on the copper tea leakage. Copper tea leakage often contacts tea leaves, and the content of tannic acid will lead to the oxidation of solder joints to generate iron tannic acid, which is blue-black Copper tea leakage has the advantages of fast heat transfer, long-lasting and not easy to be damaged. Besides, making tea with a copper tea set does not take away the fragrance of tea, and the fragrance of tea is lasting, and the tea soup is fresh and melodious, which can play a role in convergence and sterilization.