Skip to content
LAB EQUIPMENT REPAIRS, INCLUDING ULTRALOW FREEZERS, FRIDGES, CENTRIFUGES AND MORE - Click here for details
LAB EQUIPMENT REPAIRS, INCLUDING ULTRALOW FREEZERS, FRIDGES, CENTRIFUGES AND MORE - Click here for details
About Us Our Products Blog Sell Your Equipment Biosafety Cabinet Certifications Contact Us
Circulators

Circulators

American Instrument Exchange offers used and refurbished laboratory circulators for sale, designed for precise temperature control in scientific, clinical, pharmaceutical, and research applications. Our inventory includes refrigerated circulators, heated circulators, recirculating chillers, immersion circulators, and laboratory temperature control systems from trusted manufacturers including Thermo Fisher Scientific, Julabo, PolyScience, Lauda, and Huber.

Laboratories use circulators for a wide range of applications including sample cooling, temperature-controlled reactions, rotary evaporation, analytical instrumentation, viscosity testing, jacketed reactor systems, and other temperature-sensitive laboratory processes. When selecting a laboratory circulator, buyers should consider temperature range, cooling and heating capacity, circulation performance, reservoir size, control accuracy, and compatibility with their laboratory workflow. Choosing the correct circulator can improve process stability, reproducibility, and overall laboratory efficiency.

American Instrument Exchange has extensive experience refurbishing laboratory equipment, including refrigerated and heated circulators. Our technicians inspect and test each unit to verify proper cooling and heating operation, temperature stability, pump functionality, controller performance, and overall system reliability prior to shipment. All systems are cleaned, serviced, and evaluated to help ensure dependable operation upon arrival at your facility.

Our inventory includes immersion circulators for water bath applications, refrigerated circulators for low-temperature processes, heated circulators for precise thermal control, and recirculating chillers for analytical and industrial laboratory equipment. These systems are commonly used in life science research, pharmaceutical laboratories, biotechnology facilities, chemical processing applications, environmental testing laboratories, and industrial research environments.

Browse our selection of used laboratory circulators for sale to find reliable temperature control equipment at competitive prices. Specifications are provided to assist with laboratory planning, application compatibility, and installation requirements.

Fisher Scientific Isotemp 250LCU
Fisher Scientific Isotemp 250LCU
$2,350.00 - $2,350.00
$2,350.00
$2,350.00 - $2,350.00
$2,350.00

Fisher 250LCU circulator

Fisher Scientific
Low stock

Fisher Scientific Isotemp 250LCU Cooling/Heating Recirculating Chiller The Fisher Scientific Isotemp 250LCU Cooling/Heating Recirculating Chiller i...

View full details
$2,350.00 - $2,350.00
$2,350.00
$2,350.00 - $2,350.00
$2,350.00
Neslab Merlin M33 Recirculating Chiller
$2,450.00 - $2,450.00
$2,450.00
$2,450.00 - $2,450.00
$2,450.00

Neslab Merlin M33 chiller

Neslab
Low stock

Neslab Merlin M33 Recirculating Chiller The Neslab Merlin M33 Recirculating Chiller is a handy machine – compact and portable, this durable chiller...

View full details
$2,450.00 - $2,450.00
$2,450.00
$2,450.00 - $2,450.00
$2,450.00
$1,600.00 - $1,600.00
$1,600.00
$1,600.00 - $1,600.00
$1,600.00

Thermo Neslab RTE7 recirculating chiller

Neslab
Low stock

Thermo Neslab RTE7 recirculating chiller The Thermo Neslab RTE7 Recirculating Chiller is a high-performance refrigerated bath circulator designed t...

View full details
$1,600.00 - $1,600.00
$1,600.00
$1,600.00 - $1,600.00
$1,600.00
$1,450.00 - $1,450.00
$1,450.00
$1,450.00 - $1,450.00
$1,450.00

Thermo Haake C10 recirculating chiller

Thermo
Low stock

Thermo Haake C10 recirculating chiller The Thermo Haake C10 recirculating chiller features superior cooling and heating power.  Testing Most of the...

View full details
$1,450.00 - $1,450.00
$1,450.00
$1,450.00 - $1,450.00
$1,450.00
$1,500.00 - $1,500.00
$1,500.00
$1,500.00 - $1,500.00
$1,500.00

Julabo FP25-MV refrigerated heating circulator

Julabo
Low stock

Julabo FP25-MV refrigerated heating circulator Julabo FP25-MV refrigerated heating circulators are designed for external temperature tasks and for ...

View full details
$1,500.00 - $1,500.00
$1,500.00
$1,500.00 - $1,500.00
$1,500.00
Picture coming soon
$5,100.00 - $5,100.00
$5,100.00
$5,100.00 - $5,100.00
$5,100.00

Julabo FT 900 Chiller

Julabo
Low stock

Julabo FT900 Immersion Cooler The Julabo FT900 immersion cooler is primarily employed for countercooling open bath circulators to ambient temperatu...

View full details
$5,100.00 - $5,100.00
$5,100.00
$5,100.00 - $5,100.00
$5,100.00
Julabo FT-401 Immersion Cooler
$700.00 - $700.00
$700.00
$700.00 - $700.00
$700.00

Julabo FT-401

Julabo
Low stock

Julabo FT-401 Immersion Cooler The Julabo FT-401 Immersion Cooler provides rapid and efficient cooling for laboratory applications, ensuring precis...

View full details
$700.00 - $700.00
$700.00
$700.00 - $700.00
$700.00
Neslab EX-200 Recirculating Water Bath
$500.00 - $500.00
$500.00
$500.00 - $500.00
$500.00

Neslab Exacal Ex-200

Neslab
Low stock

Neslab Exacal EX-200 Recirculating Water Bath The Neslab Exacal EX-200 Recirculating Water Bath provides precise temperature control for a variety ...

View full details
$500.00 - $500.00
$500.00
$500.00 - $500.00
$500.00
$1,275.00 - $1,275.00
$1,275.00
$1,275.00 - $1,275.00
$1,275.00

Pharmacia Multitemp III recirculating chiller

Pharmacia
Low stock

Pharmacia Multitemp III recirculating chiller The Pharmacia Multitemp III recirculating chiller circulates constant temperature liquid to external ...

View full details
$1,275.00 - $1,275.00
$1,275.00
$1,275.00 - $1,275.00
$1,275.00
Cole Parmer Polystat 12105-30
$0.00 - $0.00
$0.00
$0.00 - $0.00
$0.00

Cole Parmer Polystat 12105-30

Cole Parmer
Low stock

Cole Parmer Polystat 12105-30 Heated Circulating Bath This Cole Parmer Polystat 12105-30 is used and reconditioned. Specifications 6L Capacity 90-...

View full details
$0.00 - $0.00
$0.00
$0.00 - $0.00
$0.00
Lauda UKT Refrigerated Circulating Chiller
$3,750.00 - $3,750.00
$3,750.00
$3,750.00 - $3,750.00
$3,750.00

Lauda UKT Circulating Chiller

Lauda
Low stock

Lauda UKT Refrigerated Circulating Chiller This Lauda UKT Refrigerated Circulating Chiller is used and reconditioned. Specifications Temperature r...

View full details
$3,750.00 - $3,750.00
$3,750.00
$3,750.00 - $3,750.00
$3,750.00
Cole Parmer Model BT15
$675.00 - $675.00
$675.00
$675.00 - $675.00
$675.00

Cole Parmer BT15 heated bath

Cole Parmer
Low stock

Cole Parmer Model BT15 Heated Circulating Bath This Cole Parmer Model BT15 Heated Circulating Bath is used and reconditioned. Specifications Analo...

View full details
$675.00 - $675.00
$675.00
$675.00 - $675.00
$675.00
Haake C20 Refrigerated Circulator
$2,150.00 - $2,150.00
$2,150.00
$2,150.00 - $2,150.00
$2,150.00

Haake C20 circulator

Thermo
Low stock

Haake C20 Refrigerated Circulator This Haake C20 Refrigerated Circulator is used and reconditioned. Specifications -20°C to +100°C temperature ran...

View full details
$2,150.00 - $2,150.00
$2,150.00
$2,150.00 - $2,150.00
$2,150.00
Haake D1 Circulator
$375.00 - $375.00
$375.00
$375.00 - $375.00
$375.00

Haake D1 immersion heater

Thermo
Low stock

Haake D1 Immersion Heating Circulator This Haake D1 Immersion Heating Circulator is used and reconditioned. Specifications Temp range: up to 105°C...

View full details
$375.00 - $375.00
$375.00
$375.00 - $375.00
$375.00
$490.00 - $490.00
$490.00
$490.00 - $490.00
$490.00

Lauda E100 circulator, heat

Lauda
Low stock

Lauda E100 heating circulator Temperature controller No bath 90-day warranty Most of our equipment is used and reconditioned. Our technici...

View full details
$490.00 - $490.00
$490.00
$490.00 - $490.00
$490.00
Huber Unichiller Circulator
Huber Unichiller Circulator
$3,350.00 - $3,350.00
$3,350.00
$3,350.00 - $3,350.00
$3,350.00

Huber Unichiller circulator

Huber Model
Low stock

Huber Unichiller Circulator The Huber Unichiller Circulator provides superior efficiency and consistent performance, delivering stable pressure and...

View full details
$3,350.00 - $3,350.00
$3,350.00
$3,350.00 - $3,350.00
$3,350.00
PolyScience Model 625 Recirculating Chiller
$850.00 - $850.00
$850.00
$850.00 - $850.00
$850.00

PolyScience 625 chiller

Polyscience
Low stock

PolyScience Model 625 Recirculating Chiller This PolyScience Model 625 Recirculating Chiller is used and reconditioned. Specifications 575 watts c...

View full details
$850.00 - $850.00
$850.00
$850.00 - $850.00
$850.00
Fisher Isotemp 2028S Heating Circulator
$590.00 - $590.00
$590.00
$590.00 - $590.00
$590.00

Fisher Isotemp 2028S

Fisher
Low stock

Fisher Isotemp 2028S Heating Circulator The Fisher Isotemp 2028S Heating Circulator provides precise temperature control for laboratory application...

View full details
$590.00 - $590.00
$590.00
$590.00 - $590.00
$590.00
Haake DC10 Immersion Heating Circulator
$750.00 - $750.00
$750.00
$750.00 - $750.00
$750.00

Haake DC10 immersion heater

Almedica
Low stock

Haake DC10 Immersion Heating Circulator The Haake DC10 Immersion Heating Circulator delivers powerful and precise temperature control for laborator...

View full details
$750.00 - $750.00
$750.00
$750.00 - $750.00
$750.00
Lauda WKL230 Recirculating Chiller
$1,750.00 - $1,750.00
$1,750.00
$1,750.00 - $1,750.00
$1,750.00

Lauda WKL-230 refrigerated

Lauda
Low stock

Lauda WKL230 Recirculating Chiller The Lauda WKL230 Recirculating Chiller delivers precise temperature control with advanced features that ensure c...

View full details
$1,750.00 - $1,750.00
$1,750.00
$1,750.00 - $1,750.00
$1,750.00
Grant GD100
Grant GD100
$0.00 - $0.00
$0.00
$0.00 - $0.00
$0.00

Grant GD100 Circulating bath

Grant
Low stock

Grant GD100 Circulating Immersion Heating Bath The Grant GD100 Circulating Immersion Heating Bath offers reliable temperature control for straightf...

View full details
$0.00 - $0.00
$0.00
$0.00 - $0.00
$0.00
Neslab Merlin M25 Recirculating Chiller
$1,975.00 - $1,975.00
$1,975.00
$1,975.00 - $1,975.00
$1,975.00

Neslab Merlin M25 circulator

Neslab
Low stock

Neslab Merlin M25 Recirculating Chiller The Neslab Merlin M25 Recirculating Chiller provides consistent and reliable cooling for demanding applicat...

View full details
$1,975.00 - $1,975.00
$1,975.00
$1,975.00 - $1,975.00
$1,975.00
Thermo Haake A10 circulator
Thermo Haake A10 circulator
$2,450.00 - $2,450.00
$2,450.00
$2,450.00 - $2,450.00
$2,450.00

Thermo Haake A10 circulator

Thermo
Low stock

Thermo Scientific – Haake A10 Refrigerated Circulator with SC100 Controller Thermo Haake A10 circulator baths provide efficient cooling for open an...

View full details
$2,450.00 - $2,450.00
$2,450.00
$2,450.00 - $2,450.00
$2,450.00
Left angled perspective view of Julabo FL1703 recirculating chiller showing side casing, front louvered vent, pressure gauge, and digital control keypad
Julabo FL1703 recirculating chiller sitting on a wooden pallet showing front louvered ventilation grille, pressure gauge on left panel, and top digital control display
$8,775.00 - $8,775.00
$8,775.00
$8,775.00 - $8,775.00
$8,775.00

Julabo FL1703 Recirculating Chiller

Julabo
In stock

Julabo FL1703 Recirculating Chiller The Julabo FL1703 recirculating chiller is designed for installation below a lab bench. This compact model is i...

View full details
$8,775.00 - $8,775.00
$8,775.00
$8,775.00 - $8,775.00
$8,775.00