Circulators & baths are mainly used in laboratories for controlling temperature. There can be refrigerated or heated circulators and baths available. They are primarily used for cooling or heating liquid samples to maintain or obstruct various reactions. There are some varieties of circulators and baths, which are used to agitate samples.

Salient Features

• Baths are usually made of stainless steel with immersion circulators.
• Proper design of circulators and baths include a number of physical and mechanical features.
• Circulators and bath featuring conventional design have separate heating and cooling devices, which are immersed in bath liquid.
• The bath fluid needs to stirred effectively to maintain an even temperature.
• The stirring of fluid should be done very carefully so that there is no bubble formation in the fluid.
• The equipment is provided with a temperature control system, including the temperature sensor in order to maintain uniform temperature for longer duration.
• The most commonly used fluids in circulators and baths are oil and water.
• A wide variety of high-dielectric fluids are also used for temperatures below 32º F and above 212º F. In this case, use of water would not be feasible.

Safety Issues in Circulators & Baths

A number of safety issues needs to be considered while using circulators and baths. Few safety measures are:

• Heating of baths is dangerous as they are mostly used in combination with other flammable liquids.
• It is always advisable to use circulators and baths on top of some durable surface.
• Baths and circulators should always be kept away from flammable materials to avoid sudden combustion.
• Baths and circulators should be completely cooled before removing them off.

Applications

• Internal & External circulation applications
• Analytical instrumentation
• Laboratory testing
• Immunochemistry
• Molecular Diagnostics