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Thermo Scientific SC150 Heated Circulating Bath with A5B Bath
The Thermo Scientific SC150 Heated Circulating Bath with Haake A5B bath provides precise temperature control for laboratory samples, testing procedures, and externally connected equipment. Combining the SC150 digital immersion circulator with a large stainless steel bath, this system offers a 12–21 L operating capacity, temperatures up to 150°C, ±0.02°C temperature stability, and fluid circulation for consistent bath conditions.
Available used and refurbished from American Instrument Exchange, the Thermo SC150 is a versatile laboratory heated bath circulator suitable for sample preparation, calibration, materials testing, chemistry, and general temperature-control applications. The SC150 controller features programmable setpoints, adjustable pump operation, digital temperature control, safety monitoring, and external circulation capability. A 90-day warranty is included.
Key Features
Maximum operating temperature of 150°C
12–21 L bath operating volume
±0.02°C temperature stability
Maximum circulation flow rate up to 17 L/min
Self-tuning PID temperature controller
Five programmable temperature setpoints
Two selectable pump speeds
Internal bath circulation for improved temperature uniformity
Capability for external fluid circulation
Low-liquid-level and overtemperature protection
USB communication interface
Used, refurbished, and tested by American Instrument Exchange
90-day warranty included
Overview
The Thermo Scientific SC150 is a digital immersion circulator paired on this system with a Haake A5B stainless steel bath. Unlike the recirculating chillers and dynamic temperature-control systems used primarily with external equipment, this configuration provides a usable temperature-controlled bath where samples, vessels, and laboratory materials can be placed directly into the circulating fluid.
The SC150 controller continuously heats and circulates the bath fluid to promote stable, uniform temperatures throughout the working area. A self-tuning PID controller regulates heating performance, while the digital interface allows operators to select and monitor operating temperatures.
The system can also circulate temperature-controlled fluid to compatible external equipment. This makes the SC150/A5B useful both as a conventional laboratory circulating water bath and as a source of heated circulating fluid for externally connected applications.
Key Specifications
Specification
Details
Manufacturer
Thermo Scientific
Controller Model
SC150
Bath
Haake A5B
Equipment Type
Heated circulating bath / immersion circulator
Maximum Temperature
150°C
Heated Operating Range
Approx. ambient +13°C to 150°C
Extended Range with Supplemental Cooling
Down to approximately -5°C
Temperature Stability
±0.02°C
Bath Operating Volume
12–21 L
Bath Working Area
Approx. 7.9 in. D × 11.7 in. W × 7.5 in. L
Maximum Flow Rate
17 L/min
Maximum Pump Pressure
Approx. 300 mbar / 4.35 psi
Pump Speeds
2
Heating Capacity at 115 V
1.2 kW
Controller
Self-tuning PID
Programmable Setpoints
5
Communications
USB; additional communication options supported
Safety Class
Class III / FL
Electrical Requirements
115 V, 60 Hz
Warranty
90 days
Common Applications
The Thermo SC150 heated circulating bath is suitable for laboratory procedures requiring samples or vessels to be maintained at a consistent elevated temperature. Typical applications include sample preparation, materials testing, calibration procedures, reagent warming, incubation, chemical research, viscosity-related testing, and other temperature-sensitive laboratory methods.
Because the system also supports external circulation, conditioned bath fluid can be directed through compatible equipment such as condensers, jacketed vessels, bioreactors, and other apparatus requiring a circulating heat-transfer fluid.
The combination of direct bath access and external circulation makes this configuration more versatile than a simple non-circulating laboratory water bath.
Ideal Laboratory Types
The Thermo SC150 is appropriate for biotechnology, pharmaceutical, chemistry, clinical research, materials-science, quality-control, industrial, academic, and general research laboratories.
Its relatively large bath volume can be particularly useful for laboratories that need to accommodate multiple sample containers or larger vessels while maintaining consistent temperature conditions throughout the bath.
Temperature Control & Stability
The SC150 controller provides specified temperature stability of ±0.02°C under manufacturer-defined operating conditions. Continuous fluid circulation helps minimize temperature gradients within the bath, providing more uniform conditions than would typically be expected from a basic non-circulating water bath.
The controller uses self-tuning PID technology to optimize temperature regulation for the installed bath and operating conditions. Five programmable setpoint temperatures allow frequently used temperatures to be stored for convenient recall.
The SC150 controller can operate at temperatures as high as 150°C when an appropriate heat-transfer fluid is used. When operated as a heated bath without supplemental refrigeration, the practical lower temperature is approximately 13°C above ambient. With suitable supplemental cooling, the A5B/SC150 configuration can reach temperatures below ambient.
Users should always select a heat-transfer fluid appropriate for the desired operating temperature rather than assuming water can be used throughout the SC150's full temperature range.
Circulation & Pump Performance
The SC150 provides a maximum circulation flow rate of approximately 17 L/min. Two pump-speed settings allow users to adjust circulation according to the application and can help reduce unnecessary turbulence when working with samples directly in the bath.
Internal circulation continuously moves fluid through the reservoir, helping transfer heat efficiently and maintain consistent temperature conditions across the working area.
The circulator can also pump to an external system. This allows the SC150 to provide temperature-controlled fluid to compatible laboratory equipment rather than functioning exclusively as an immersion bath.
Actual external flow will depend on tubing diameter and length, fittings, fluid viscosity, operating temperature, and the hydraulic resistance of the connected equipment.
Refurbishment & Testing
This used Thermo Scientific SC150 heated circulating bath is refurbished and tested by American Instrument Exchange before shipment. Our technicians inspect the heater, circulation pump, temperature controller, bath, electrical components, safety systems, and user controls and operate the system to confirm proper functionality.
Temperature-controlled equipment is tested using NIST-traceable probes and data loggers. The bath is operated under simulated laboratory conditions to verify heating, circulation, temperature regulation, and general performance. The stainless steel bath, controller, and fluid-contact areas are also cleaned and inspected prior to shipment.
If your application requires operation at a particular temperature or has specific testing requirements, contact American Instrument Exchange before shipment. When practical, our technicians can incorporate those conditions into final testing.
A 90-day warranty is included with this refurbished Thermo Scientific circulating bath.
Choosing the Right Heated Circulating Bath
When selecting a heated laboratory bath, buyers should consider maximum temperature, bath capacity, usable working area, temperature stability, circulation performance, heat-transfer fluid requirements, and whether external circulation will be needed.
The SC150 with A5B bath is particularly well suited for applications requiring a relatively large working bath combined with precise circulating temperature control. Its 12–21 L operating volume provides considerably more usable capacity than a small benchtop bath, while the SC150 controller supports temperatures as high as 150°C.
For applications requiring routine operation substantially below ambient temperature, a refrigerated bath circulator may be a better choice. Laboratories requiring only moderate-temperature sample warming without external circulation may instead find that a simpler laboratory water bath meets their needs.
American Instrument Exchange can help compare available used and refurbished water baths and circulators based on bath capacity, operating temperature, stability, circulation requirements, and application.
What is the maximum temperature of the Thermo SC150?
The Thermo Scientific SC150 controller can operate at temperatures up to 150°C when used with an appropriate bath and heat-transfer fluid.
What is the capacity of this SC150 circulating bath?
This unit combines the SC150 controller with a Haake A5B bath providing an operating fluid volume of approximately 12–21 liters.
How stable is the temperature in the Thermo SC150?
Thermo specifies temperature stability of ±0.02°C for the SC150 under defined operating conditions. Continuous fluid circulation also helps maintain consistent temperatures throughout the bath.
Can the Thermo SC150 circulate fluid to external equipment?
Yes. The SC150 supports external circulation and can provide temperature-controlled fluid to compatible equipment such as jacketed vessels, condensers, and other laboratory apparatus.
Can the SC150 cool below room temperature?
The SC150 itself is a heated immersion circulator and does not contain an integrated refrigeration system. Below-ambient operation requires supplemental cooling or installation in a refrigerated bath. With appropriate cooling, the A5B configuration can support temperatures down to approximately -5°C.
Can water be used at the SC150's maximum temperature?
No. The appropriate heat-transfer fluid depends on the operating temperature. Water is suitable only within its safe working range; higher-temperature applications require a compatible heat-transfer fluid rated for those conditions.
Does this refurbished Thermo SC150 include a warranty?
Yes. This used Thermo Scientific SC150 heated circulating bath is refurbished and tested by American Instrument Exchange and includes a 90-day warranty.
Click Hereto see the Thermo Haake SC150 immersion 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.
