The water bath kettle has a built-in stainless steel tube heater and perforated aluminum shelves inside the water tank. It is mainly used for distilling, drying, concentrating, warming chemicals, or biological products in laboratories. It can also be applied in constant temperature heating and other temperature tests. So the water bath kettle is the necessary tool for biology, genetics, virus, aquatic products, environmental protection, medicine, health, laboratory, analysis room, education, and scientific research.