The Thermo Scientific Haake SC150-A25 Refrigerated/Heated Circulator is a precision laboratory temperature-control system designed for heating, cooling, direct sample conditioning, and circulation through compatible external equipment. Combining the SC150 digital controller with the Thermo Scientific ARCTIC A25 refrigerated bath, this system provides a broad -25°C to +150°C operating range, approximately 500 W of cooling capacity, a 7–12 L working volume, and circulation flow up to approximately 17 L/min.
The SC150-A25 is well suited for laboratories that need both subambient cooling and elevated-temperature operation from a single compact system. Its stainless-steel bath provides direct access for samples and laboratory vessels, while external circulation capability allows temperature-controlled fluid to be supplied to compatible reactors, condensers, rotary evaporators, heat exchangers, and other laboratory equipment.
Available used and refurbished from American Instrument Exchange, this Thermo Scientific Haake SC150-A25 is inspected and tested for heating, refrigeration, circulation, temperature regulation, and overall operating performance. A 90-day warranty is included.
Key Features
-25°C to +150°C operating temperature range
SC150 digital temperature controller
7–12 L working bath volume
Approximately 500 W cooling capacity
Temperature stability as tight as approximately ±0.02°C
Maximum circulation flow approximately 17 L/min
Stainless-steel refrigerated bath
Integrated heating and mechanical refrigeration
Internal bath circulation
External circulation capability
Approximately 1,200 W heating capacity on 115 V configuration
Adjustable controller position for easier viewing
Three-sided ventilation design
Front-mounted bath drain
Integrated carrying handles
Low-liquid and over-temperature protection
CFC-free refrigeration system
Refurbished and tested by American Instrument Exchange
90-day warranty included
Thermo Haake SC150 Circulator with A25 Refrigerated Bath Overview
The Thermo Scientific Haake SC150-A25 combines the SC150 digital immersion circulator with the ARCTIC A25 refrigerated stainless-steel bath to provide precise heating and cooling across a broad temperature range.
Mechanical refrigeration allows the system to maintain temperatures substantially below ambient, while the integrated heater extends operation to approximately +150°C. This makes the SC150-A25 useful for laboratories that would otherwise require separate heated and refrigerated temperature-control equipment.
The A25 reservoir provides approximately 7–12 L of working fluid volume. Samples, laboratory vessels, test components, and other compatible materials can be placed directly within the bath for controlled-temperature procedures.
The system can also circulate conditioned fluid through compatible external equipment. This allows the SC150-A25 to support jacketed reactors, condensers, rotary evaporators, heat exchangers, analytical instruments, and other devices requiring an external temperature-control loop.
Thermo designed the ARCTIC platform for flexible laboratory placement. The controller can be indexed for easier viewing, while the three-sided ventilation concept helps simplify installation in crowded laboratory environments.
Key Specifications
Specification
Details
Manufacturer
Thermo Scientific / Haake
Series
ARCTIC
Bath Model
A25
Controller
SC150
Configuration
SC150-A25
Equipment Type
Refrigerated/heated circulating bath
Temperature Range
-25°C to +150°C
Temperature Stability
Approx. ±0.02°C
Bath Volume
Approx. 7–12 L / 1.8–3.2 gal
Cooling Capacity
Approx. 500 W
Maximum Pump Flow
Approx. 17 L/min
Heating Capacity
Approx. 1,200 W, 115 V configuration
Internal Circulation
Yes
External Circulation
Yes
Refrigerant
R134a
Work Area Depth
Approx. 8.0 in.
Work Area Width
Approx. 6.8 in.
Work Area Length
Approx. 7.2 in.
Overall Height
Approx. 28.0 in.
Overall Width
Approx. 10.7 in.
Overall Depth
Approx. 19.0 in.
Approximate Weight
79.5 lb / 36.1 kg
Electrical
115 V, 60 Hz for this configuration; verify nameplate
Warranty
90 days
Common Applications
The Thermo Haake SC150 Circulator with A25 Refrigerated Bath can support a broad range of laboratory procedures requiring controlled heating, refrigeration, and fluid circulation. Typical applications include sample conditioning, materials testing, chemical reaction control, viscosity studies, calibration, reagent preparation, rotary evaporation, condenser cooling, bioreactor temperature control, jacketed vessel circulation, and general research.
For direct-bath applications, the stainless-steel reservoir provides a temperature-controlled environment for compatible samples, vessels, probes, components, and test materials.
The -25°C lower operating limit provides substantially greater subambient capability than circulating baths limited to approximately -10°C. At the opposite end of the range, the SC150 controller allows operation to approximately +150°C when an appropriate heat-transfer fluid and operating configuration are used.
External circulation provides additional flexibility. Conditioned fluid can be routed through compatible equipment and returned to the bath, allowing the SC150-A25 to function as an external temperature-control source as well as an open circulating bath.
Ideal Laboratory Types
The Thermo Scientific Haake SC150-A25 is well suited for pharmaceutical and biotechnology laboratories, chemistry laboratories, analytical laboratories, materials-science groups, process-development facilities, quality-control departments, industrial R&D laboratories, calibration laboratories, and academic research environments.
Its broad temperature range can be particularly useful for laboratories performing multiple types of thermal testing or experimental work.
The system is also appropriate for laboratories using rotary evaporators, jacketed reactors, condensers, bioreactors, or other equipment requiring a controlled external fluid loop.
Performance & Temperature Stability
The Thermo Scientific Haake SC150-A25 provides controlled operation from approximately -25°C to +150°C with temperature stability as tight as approximately ±0.02°C under appropriate operating conditions.
The SC150 digital controller regulates the heating and cooling systems while active fluid circulation continuously distributes conditioned fluid throughout the reservoir. This helps minimize temperature gradients and provides consistent thermal conditions around immersed samples.
The A25 refrigeration system provides approximately 500 W of cooling capacity. Available refrigeration capacity will vary with operating temperature and external heat load, so the maximum cooling rating should not be interpreted as constant throughout the entire -25°C to +150°C range.
The circulation pump provides maximum flow of approximately 17 L/min. For direct bath applications, this circulation promotes temperature uniformity and efficient thermal transfer.
For external applications, actual delivered flow depends on tubing length and diameter, fittings, fluid viscosity, operating temperature, elevation, and hydraulic resistance within the connected equipment.
The broad temperature range also makes heat-transfer fluid selection particularly important. Water may be suitable for moderate operating temperatures, but subzero and high-temperature applications require a fluid compatible with the desired temperature and circulator materials.
This used Thermo Scientific Haake SC150-A25 Refrigerated/Heated Circulator is refurbished and tested by American Instrument Exchange before shipment. Our technicians inspect the compressor, condenser, refrigeration circuit, heater, circulation pump, SC150 controller, temperature sensor, display, stainless-steel bath, external circulation connections, drain, electrical components, housing, and applicable safety systems.
Temperature-controlled equipment is tested using NIST-traceable probes and data loggers. Because the SC150-A25 provides both heating and refrigeration, the system can be tested at multiple operating temperatures to evaluate temperature pull-down, heating performance, circulation, controller response, temperature regulation, and overall system stability.
The stainless-steel reservoir and accessible fluid-contact components are cleaned and inspected before shipment.
Customers requiring the SC150-A25 for a particular operating temperature or external circulation application are encouraged to provide their requirements before shipment. When practical, American Instrument Exchange can incorporate customer-requested conditions into final testing.
A 90-day warranty is included.
Shipping & Installation
The Thermo Haake SC150 Circulator with A25 Refrigerated Bath weighs approximately 80 lb and should be transported with the bath drained and the refrigeration system properly protected. American Instrument Exchange prepares the unit for shipment with appropriate protection for the controller, refrigeration system, stainless-steel bath, housing, and fluid connections.
After installation, the reservoir should be filled with an appropriate heat-transfer fluid selected for the intended operating temperature.
Thermo's three-sided ventilation concept provides additional flexibility when locating the unit around other laboratory equipment. Appropriate airflow and service access should nevertheless be maintained according to manufacturer recommendations.
When external circulation is required, supply and return tubing should be securely connected and inspected for leaks before operation. Tubing, fittings, and heat-transfer fluid should all be suitable for the intended operating temperature.
For high-temperature applications approaching the upper end of the SC150's range, particular attention should be paid to fluid selection, tubing materials, insulation, and safe handling of exposed hot surfaces.
Related Equipment
American Instrument Exchange stocks a range of laboratory circulators, including Thermo Scientific Haake refrigerated/heated circulators, heated circulating baths, recirculating chillers, and immersion circulators. Laboratories considering the SC150-A25 may also want to compare available laboratory water baths, reactors and fermenters, evaporators and extractors, and other refurbished laboratory equipment.
What is the temperature range of the Thermo Haake SC150-A25?
The SC150 controller paired with the ARCTIC A25 refrigerated bath provides an operating temperature range of approximately -25°C to +150°C.
What is the capacity of the A25 bath?
The Thermo Scientific A25 has an approximately 7–12 L working fluid volume, equivalent to approximately 1.8–3.2 gallons.
How much cooling capacity does the A25 provide?
Thermo Scientific specifies approximately 500 W of cooling capacity for the A25 refrigerated bath. Available capacity varies with operating temperature and environmental conditions.
How stable is the SC150-A25?
The SC150-A25 can provide temperature stability as tight as approximately ±0.02°C under appropriate operating conditions.
What is the circulation flow rate?
The SC150 configuration provides maximum circulation flow of approximately 17 L/min.
Can samples be placed directly in the A25 bath?
Yes. The stainless-steel A25 bath is designed for direct temperature control of compatible samples, vessels, probes, test components, and other materials.
Can the SC150-A25 circulate fluid through external equipment?
Yes. The system supports external circulation and can supply temperature-controlled fluid to compatible reactors, condensers, heat exchangers, rotary evaporators, and other closed-loop laboratory equipment.
Can the Thermo Haake SC150-A25 be used with a rotary evaporator?
Yes. Refrigerated circulation for rotary evaporator condensers is an appropriate application, provided the required coolant temperature, heat load, flow, and other operating conditions fall within the system's capabilities.
Can the SC150-A25 heat as well as cool?
Yes. The system combines mechanical refrigeration with an integrated heater, allowing it to perform both subambient cooling and elevated-temperature applications.
What is the difference between the SC150-A25 and SC100-A25?
Both use the same A25 refrigerated bath, but the controller determines the upper operating temperature. Thermo specifies the SC100-A25 to approximately +100°C, while the SC150-A25 extends the upper limit to approximately +150°C.
What is the difference between the A25 and A25B?
The A25 and A25B are different bath configurations. The A25 provides approximately 7–12 L of working volume and measures about 10.7 inches wide × 19 inches deep. The A25B is a larger bath with approximately 13–21 L working volume and different physical dimensions.
What refrigerant does the Thermo Scientific A25 use?
Thermo Scientific specifies R134a refrigerant for this generation of the A25 refrigerated bath.
What heat-transfer fluid should be used in the SC150-A25?
Fluid selection depends on the required operating temperature. Water may be appropriate for many moderate-temperature applications, while subzero or high-temperature operation requires a compatible heat-transfer fluid rated for the intended conditions.
Does this refurbished Thermo Scientific Haake SC150-A25 include a warranty?
Yes. This used Thermo Scientific Haake SC150-A25 is refurbished and tested by American Instrument Exchange and includes a 90-day warranty.
Click here to see the Thermo Haake SC150 circulator on the American Instrument Exchange YouTube channel.
Testing Procedures for Used and Refurbished Laboratory Equipment
Ensure Accuracy, Safety, and Dependable Performance Across Applications
At American Instrument Exchange, all used and refurbished laboratory equipment undergoes a rigorous, multi-point testing protocol to ensure optimal performance, operational safety, and long-term reliability. Whether the equipment is destined for research, diagnostics, quality control, or production environments, our thorough inspection and testing process is designed to meet the highest standards of laboratory excellence.
Why Testing Used Lab Equipment Is Essential
Before any refurbished laboratory equipment is returned to service, it must be carefully tested to verify:
• Functional integrity and operational performance
• Setpoint accuracy and repeatability (where applicable)
• User interface responsiveness and control features
Proper testing reduces the risk of equipment failure, measurement inaccuracies, or user hazards—helping to ensure consistent results in clinical, academic, biotech, and industrial labs.
Our standardized lab equipment testing procedures are tailored to each equipment type, ensuring every unit meets manufacturer specifications and industry benchmarks.
Key Testing Procedures for Refurbished and Used Laboratory Equipment
1. Initial Visual Inspection
• Examine equipment housing for signs of wear, corrosion, or damage
• Check ports, power cords, and exterior components for tampering or deterioration
• Verify that internal and external parts (racks, shelves, connectors, accessories) are present and undamaged
2. Functional Startup and Operational Testing
• Power on the equipment and verify startup diagnostics
• Confirm functionality of displays, buttons, switches, and control panels
• Run basic functions to confirm proper response and behavior under standard operating conditions
3. Testing and Performance Verification
• Test internal sensors or control systems using industry-standard tools
• Perform operational tests to validate accuracy and consistency
• Verify key performance specifications such as temperature control, timing, speed, or measurement outputs, depending on equipment type
4. Mechanical and Electrical System Testing
• Evaluate motors, pumps, fans, or other moving parts for smooth operation
• Inspect and test wiring, relays, fuses, and circuit boards for safety and reliability
• Test power delivery and grounding compliance
5. Safety and Compliance Checks
• Ensure equipment is grounded and insulated to meet laboratory safety standards
• Test alarms, interlocks, emergency stops, or safety shutdown systems if applicable
6. Final Quality Assurance and Documentation
• Perform extended runtime testing
• Document operational logs, testing results, and any repairs or adjustments made
• Complete a final inspection, thorough cleaning, and packaging for delivery
Trusted Quality from American Instrument Exchange
With over 50 years of experience in laboratory equipment refurbishment, American Instrument Exchange is committed to delivering certified, lab-ready instruments backed by expert testing. Our testing protocols ensure that each piece of equipment—regardless of type—is safe, accurate, and dependable from day one.
Whether you're equipping a startup lab or expanding a high-throughput facility, you can count on our refurbished laboratory equipment to perform with precision and reliability.
Refurbishment Protocol for Used Laboratory Equipment from American Instrument Exchange
At American Instrument Exchange, every piece of used laboratory equipment we offer undergoes a multi-step refurbishment process. Whether it's an analytical balance, centrifuge, freezer, oven, or any other essential lab instrument, our goal is to restore each unit to peak performance—ensuring accuracy, safety, and long-term reliability in scientific, clinical, industrial, and academic environments.
Why Choose Refurbished Lab Equipment from American Instrument Exchange?
• Thoroughly tested for performance, precision, and safety
• Backed by a warranty
• A cost-effective alternative to new equipment
• Environmentally sustainable through equipment reuse and waste reduction
• Serviced by expert technicians with decades of laboratory equipment experience
Step-by-Step Refurbishment Protocol
Every instrument and system refurbished at American Instrument Exchange follows a detailed, industry-aligned process:
1. Initial Intake & Inspection
• Complete visual and structural inspection for cosmetic damage, wear, or corrosion
• Mechanical assessment of hinges, seals, fasteners, motors, and moving parts
• Missing components and damaged items are documented for repair or replacement
2. Cleaning and Decontamination
• Full internal and external cleaning using non-abrasive, lab-safe solutions
• Removal of biological, chemical, or particulate contamination
• Disassembly and cleaning of removable parts such as trays, shelves, and filters
3. Mechanical and Electrical Repair
• Replacement or repair of worn or broken mechanical parts
• Evaluation and servicing of control panels, sensors, switches, and displays
• Testing and repair of electrical wiring, fuses, circuit boards, and power supplies
4. Functional System Testing
• Assessment of all major functions specific to the equipment type (e.g., speed, temperature, force, weight, timing)
• Operation of control interfaces, programming menus, and digital displays
• Verification of stabilization time, responsiveness, and user input reliability
5. Testing and Performance Verification
• Testing of internal sensors, controllers, and measurement systems using certified tools
• Multi-point testing to ensure repeatability, accuracy, and performance consistency
• Confirmation of user-defined setpoints, timing sequences, or programmable cycles
6. Safety and Compliance Checks
• Testing of safety interlocks, alarms, and over-limit protection systems (as applicable)
• Electrical safety inspections, including grounding and insulation verification
7. Final Quality Assurance and Documentation
• Full operational testing under simulated lab conditions
• Completion of performance benchmarks, testing results, and repair logs
• Final cleaning and visual inspection
Trust the Experts at American Instrument Exchange
With over 50 years of experience in the laboratory equipment industry, American Instrument Exchange is a trusted leader in high-quality refurbished lab instruments. Our refurbishment protocols ensure that every piece of equipment we sell is lab-ready—offering the precision, performance, and durability your team can count on.
Whether you’re outfitting a new lab or expanding an existing operation, choose American Instrument Exchange for tested, warrantied, and cost-effective laboratory equipment.
Warranty Information
All used equipment sold by American Instrument Exchange is refurbished/reconditioned, tested to meet specifications, cleaned, and comes with a 90-day warranty from the date of shipment unless otherwise specified. New products include a warranty from the manufacturer. Your warranty is only valid if you have paid your invoice. If your invoice is over 30 days old, warranty work will not be performed until your invoice is paid in full. American Instrument Exchange is not liable for any special or consequential damages that result from the use of, or the inability to use, the materials on this site or the performance of the products,
Exceptions include international sales and items that are agreed to be sold with a lesser warranty or items that are agreed to be sold “as is.”
Should there be visible shipping damage to packaging or concealed shipping damage to item(s) supplied, buyer must communicate such damage to the delivering entity or carrier upon receipt first and to American Instrument the same day item is accepted / signed for. Failure to do so voids warranty. Customer decision to involve / procure third party or OEM service other than American Instrument or AIE assigned vendors to resolve in-warranty instrument failure or defect without first placing a service call to American Instrument voids warranty.
Return & Cancellation Policy
American Instrument Exchange will authorize the return of and issue a full refund for any equipment that is not working as represented and could not be replaced or repaired to the customer’s satisfaction by AIE or a representative of AIE during the warranty period. Returns without prior authorization and an RMA number will not be accepted.
Customers are responsible for proper packaging of the equipment and all included accessories. American Instrument will pay for insurance and shipping costs. Non-inventory items bought specifically to fill customer orders may possibly be returned, but on a case by case basis.
Customers who cancel orders after refurbishing has begun or after delivery where there are no equipment performance issues may be subject to a Restocking/Cancellation Fee of 20% or more and responsible for shipping costs for both the delivery and return.
Ongoing and Extended Support Options
American Instrument Exchange is able to provide additional repair and support services outside the warranty terms for most products that sell.
For biosafety cabinets, clean benches, chemical fume hoods, and other clean air products our team at AIE Laboratory Services can provide certifications, repairs, decontaminations, and other services for customers throughout New England, and guidance and limited technical assistance for any customers in the US and Canada for new or refurbished biosafety cabinets purchased from American Instrument Exchange.
For all other products, the repair service team at American Instrument Exchange can provide both field and depot repair evaluations. We can easily schedule and coordinate the pick-up and transportation of your malfunctioning equipment. By offering hourly rates lower than most OEM service providers and eliminating travel time for technicians, we help reduce repair costs. Furthermore, our lab depot repair service minimizes or eliminates scheduling delays. Our experienced service technicians are qualified to restore your equipment to factory specifications.
Yes, all equipment from American Instrument Exchange comes with a warranty. Used/reconditioned/refurbished equipment is tested to make sure it operates to the manufacturer's specifications and comes with a 90-day warranty (unless otherwise noted). New equipment comes with a warranty from the manufacturer.
How do you test and recondition the equipment?
Testing requirements vary across all the equipment categories we sell. Temperature controlled units are tested with NIST traceable probes and data loggers. Gaskets, external housing, glass, handles, controls and control screens are all thoroughly inspected for integrity and functionality. We test all equipment using the manufacturer's parameters and specifications to confirm that the unit operates properly.
How do products ship from American Instrument Exchange?
We can ship products both nationally and internationally using a well-established network of transporters. Smaller items will ship via UPS. Larger equipment will be palletized and shipped either LTL or air-ride, depending on the specific equipment and/or delivery requirements.
Return and order cancellation policy
American Instrument Exchange will accept the return of any product that is not working as represented and could not be replaced or repaired to the customer's satisfaction during the warranty period. Customers who cancel orders after refurbishing has begun will be subject to a cancellation and restocking fee of between 20% and 40%.
Are discounts available for educational or non-profit institutions, or for bulk purchases?
Yes – call or email us today with a list of equipment you're looking for and we can potentially put together a quote that includes a discount.
How does your price matching policy work?
We strive to keep our pricing competitive and reasonable. If you find comparable items for sale at a lower price from other vendors please send us a link and or quote for the item and we'll do our best to match or beat the price.
Can I see the equipment in person before committing to a purchase?
Customers are welcome to make an appointment to view equipment in our warehouse. Given our workload we may not be able to test or clean the equipment prior to your arrival if you have not committed to an order.
1023 Western Avenue is a working warehouse, not a showroom, and customers should dress appropriately and wear closed toe shoes.
Can I ship products that I purchased elsewhere to American Instrument for repair?
Yes – please see our repair services page for more information.
