I have used two purple rice cookers, but if it is really purple sand, it is still good. Minerals and trace elements are good for human body, but the raw materials of purple sand on the market are very expensive, so the fake is good. If it is harmful, I want to change it to a stainless steel rice cooker at present. One more thing, my home is "Yili" purple rice cooker. The first one broke down twice after more than two years of use, and the maintenance was very expensive. Two bad ones are bad under normal use, which is very helpless. The first maintenance cost nearly 200 yuan. Repairing it twice like this is the same as buying a new one, so I stopped the second time and bought a new one directly. Later, I gradually learned something about purple sand and found that the "Yili" purple sand liner was also suspected of shoddy. So it is recommended to choose another brand or stainless steel. In addition, the real purple sand is not very dense because of its breathable characteristics, and there will be no porcelain-like crisp sound when knocking. This is a simple identification method. It should be noted that as long as it is a good purple sand, the minerals and trace elements in it are beneficial to the human body. Its lead content shall not exceed the standard. But it's hard to avoid nothing.

My humble opinion is for reference only.