Heating Circulator with stainless steel bath tanks are suitable for both internal and external temperature control. They have greater power for larger and open systems, making them ideal for external temperature control. Smaller objects may be inserted directly into the circulator bath at the same time. Models are available with a variety of bath sizes and other functional characteristics. Accessories like sensors, heat transfer liquid, tubing, and adapters are available to facilitate connection to external systems. An integrated cooling coil enables temperature control below or near the ambient temperature.