Liu Xiangjian, secretary-general of Guangdong Ceramic Industry Association, said that the manufacturers of purple clay pots did exaggerate their publicity in advertisements, but the purple clay pots on the market were nontoxic and harmless, so consumers need not panic. Xiao Hanning, director of the Institute of Ceramics of Hunan University, also said that purple sand is only a kind of clay, and there is no scientific research on its health. Most of the teapot circulating in the market is non-toxic and harmless. The harm of fake and shoddy purple sand products to human health is mainly caused by heavy metal pollution such as lead and cadmium.

Zhang, director of Guangdong Ceramic Product Quality Supervision and Inspection Station, said that according to the existing national testing standards, to judge whether it is harmful to human body, it is necessary to pass testing to see whether the products contain lead and chromium, and whether the contents of these two substances exceed the standard. If not, the product is basically harmless to human body. As for the chemical raw materials such as iron oxide and manganese oxide added in the pot-making process, they will disappear after being fired at a high temperature above 1000 degrees Celsius and will not affect the human body.