Recirculating chiller for laboratory and industrial process
A recirculating chiller precisely controls the temperature of a fluid that circulates to external applications. As a result, the unit continuously cools or heats a process fluid, with powerful pumps that transport the fluid to your application. This keeps temperature-sensitive processes stable and reproducible. Our recirculating chillers from Thermo Scientific cover the full spectrum, from compact benchtop laboratory chillers to powerful industrial process units.
Which types of recirculating chiller do we supply?
Our range covers three main categories, each suited to specific applications.
Compact laboratory recirculating chiller: a space-saving benchtop chiller for general laboratory applications. Moreover, the unit combines modern control, energy efficiency and reliable performance in a minimal footprint. Suitable for standard cooling applications up to several kilowatts of cooling capacity.
Configurable recirculating chiller: a platform with diverse configuration options for varied laboratory and process applications. In addition, these chillers are available in both air- and water-cooled variants, with a wide range of cooling capacities. As a result, suitable for laser cooling, semiconductor processes, NMR spectroscopy and critical lab instruments.
Industrial process recirculating chiller: a robust configuration for industrial process lines and 24/7 operation. Therefore, you reach high cooling capacities (up to more than 10 kW), with extensive safety features and robust components. Suitable for heavy industrial duty, fermentation reactors and continuous operation.
Specific configurations such as cooling/heating combinations, low temperature (-50°C), high temperature (+200°C) and explosion-proof options are available within each category. Our specialists are happy to advise on the right configuration for your application.
Key technical features
Wide temperature range: our recirculating chillers operate from -50°C to +200°C, depending on model and configuration. As a result, they suit both light laboratory applications and heavy industrial processes.
PID controller and programmable ramps: self-regulating PID controllers optimise temperature precisely for each specific application. Moreover, programmable temperature ramps enable complex protocols.
Powerful force and suction pumps: industrial-grade pumps circulate fluids over long distances to both open containers and closed loop systems. As a result, they suit external circulation to remote instruments.
Air- and water-cooled configurations: air-cooled models are flexible to place without water supply connection. Water-cooled models offer higher cooling capacity and suit heavy industrial duty.
Communication and integration: digital displays with intuitive operation, plus USB, RS-232, RS-485, Ethernet/LAN or analog I/O depending on the configuration. Therefore, you integrate the chiller easily into automated systems and SCADA environments.
Safety features: automatic shutdown at overheating, low fluid level or motor overload. In addition, anti-drainback and auto-refill provide process protection in continuous operation.
Which recirculating chiller suits your application?
General laboratory and analytical instruments: choose a compact benchtop recirculating chiller. Suitable for most laboratory applications at a favourable price.
Laser cooling and semiconductor processes: choose a configurable variant with water-cooled configuration. In addition, auto-refill and flow readout are essential options.
Low temperature applications (down to -50°C): choose a special low-temperature configuration with cooling/heating functionality. Suitable for cryogenic research and cold-switched reactions.
High temperature applications (up to +200°C): choose a process configuration with thermal oil as suitable fluid. Suitable for heating reactors and industrial processes.
Industrial process lines: choose an industrial process recirculating chiller with high cooling capacity. Suitable for heavy industrial duty and 24/7 operation.
Applications by sector
Laboratory and R&D: cooling of analytical instruments such as NMR spectrometers, ICP-MS, laser systems and X-ray equipment.
Pharmaceutical industry and biotech: temperature control of reactors, fermenters and process lines in pharmaceutical processes and R&D.
Food industry: cooling of reactors and process lines, plus temperature control of fermentation processes within the food industry.
Agriculture and horticulture: cooling of fermentation processes and climate-controlled growing setups within the agriculture and horticulture sector.
Semiconductor and laser industry: cooling of laser systems, semiconductor production equipment and critical industrial processes requiring strict temperature control.
Universities and research institutes: temperature control of various instruments and experimental setups with flexible configurations.
Thermo Scientific and NESLAB heritage
Thermo Scientific is a leading supplier of recirculating chillers for laboratory and industrial applications, with decades of experience in temperature control. Moreover, the brand builds on the NESLAB legacy, the original company founded in 1962 that became part of Thermo Scientific in 2003. As a result, you benefit from a combination of proven refrigeration technology and modern control systems.
Service and maintenance on all recirculating chillers
Besides supplying and installing Thermo Scientific recirculating chillers, we provide periodic maintenance, temperature calibration, fluid replacement, condenser cleaning and NEN 3140 electrical safety inspection. In addition, our engineers perform pump inspection and filter replacement. Our certified service engineers work on recirculating chillers from all brands, including Julabo, Huber, Lauda and Grant. For advice on the right recirculating chiller or a maintenance contract, please contact our specialists.
Frequently asked questions about recirculating chillers
What is a recirculating chiller?
A recirculating chiller is a device that continuously cools or heats a process fluid and circulates it to an external application. As a result, the unit precisely controls temperature and pumps the fluid to, for example, a laser head, reactor or analytical instrument. This keeps the external process at constant temperature.
What is the difference between air-cooled and water-cooled?
An air-cooled recirculating chiller uses ambient air for heat dissipation via a condenser. As a result, placement is flexible without water supply connection. A water-cooled configuration uses facility cooling water for heat dissipation. Therefore, you reach higher cooling capacity and the configuration suits heavy industrial duty.
What is the difference between a laboratory chiller and a process chiller?
A laboratory recirculating chiller is a more compact configuration for general lab applications, typically up to several kilowatts of cooling capacity. A process chiller is a more robust configuration for industrial process lines, with higher capacity, suitable for 24/7 operation and more extensive safety features. The choice depends on your cooling needs and operating duration.
What temperature range do your recirculating chillers offer?
Our recirculating chillers operate from -50°C to +200°C, depending on model and configuration. As a result, you cover both light laboratory applications and heavy industrial processes. At high temperatures up to 200°C, thermal oil is required as suitable fluid.
What fluid should I use in a recirculating chiller?
For general use down to 5°C, demineralised water suffices. For lower temperatures, you use a mixture of water and ethylene glycol or propylene glycol. For temperatures above 95°C or below -25°C, special thermal oils or synthetic fluids are required. Our specialists are happy to advise on the right fluid choice.
Which recirculating chiller brands does Poly Temp supply?
We are the official dealer of Thermo Scientific for the complete recirculating chiller product line, including the NESLAB legacy models. Moreover, we provide maintenance and service on recirculating chillers from all other brands, including Julabo, Huber, Lauda and Grant.
Which communication options do the recirculating chillers offer?
Our recirculating chillers feature USB, RS-232, RS-485, Ethernet/LAN or analog I/O for integration into automated systems. As a result, you integrate the device easily into SCADA environments, data logging systems and remote monitoring solutions. Availability depends on the specific configuration.
How often should a recirculating chiller be serviced?
Annual preventive maintenance is the standard. This includes condenser cleaning, filter replacement, fluid inspection, pump inspection, temperature calibration and NEN 3140 electrical inspection. For 24/7 industrial operation, semi-annual maintenance is recommended.
Can Poly Temp service a recirculating chiller from another brand?
Yes. Our certified service engineers perform maintenance, calibration, pump inspection and condenser cleaning on recirculating chillers from all brands. This includes Julabo, Huber, Lauda and Grant. Contact us for a tailored maintenance contract.
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