A water bath is a device used in the laboratories to incubate samples in water maintained at a constant temperature this temperature may be controlled digitally. In addition A heated bath is used in the laboratory to allow a chemical reaction to occur at an elevated temperature. It is a fluid placed in an open (metal) pot. Water and silicone oil are the most commonly used fluids. A water bath is used for temperatures up to 100 °C. The heated bath is heated on a hot plate, or with a bunsen burner. The reaction chamber (florence flask, erlenmeyer flask, beaker) is immersed in the heated bath. A thermometer is usually kept in the fluid to monitor the temperature.