Capable of reaching temperatures as low as -40°C, PolyScience Refrigerated/Heated Circulating Baths provide dependable temperature control for a wide variety of laboratory cooling applications. A bath with an integral pump, heater, refrigeration system, and temperature controller. In addition to low temperature applications, this Circulating Baths offer more precise control for applications that require bath temperatures near or below ambient. All Circulating Baths provide internal circulation as well as external circulation capability