Ceramic glaze harmful to herbal pots

Ceramic glaze is not harmful to Chinese medicine pot. The composition of ceramic glaze is mainly silicate, aluminum trioxide, lead oxide, iron trioxide, calcium oxide, magnesium oxide, potassium oxide, sodium oxide, etc., of which the main component harmful to human body is lead oxide. However, in the traditional process, the composition of the glaze usually does not contain lead oxide, so the ceramic glaze is not harmful to Chinese medicine pots. In addition, the firing temperature of ceramics is between 800-1280 degrees, which is much higher than the boiling temperature of water needed to boil Chinese medicine, so ceramic glaze does not release harmful substances at high temperatures, and is not harmful to Chinese medicine pots.