Julabo FP50 refrigerated circulator

Product Code : SKU 1467EE CIRC

Quantity

Price Match Policy

Shipping

All products ship from our 30,000 sq. ft. Haverhill, MA warehouse

Julabo FP50-HP Refrigerated Heating Circulator

The Julabo FP50-HP Refrigerated Heating Circulator is a high-performance laboratory temperature control system designed to provide precise heating and cooling for laboratory baths and external circulation applications. With an operating temperature range of -50°C to +200°C, an 8-liter stainless steel reservoir, and powerful refrigeration and circulation capabilities, the FP50-HP is well suited for demanding applications in chemistry, pharmaceutical manufacturing, biotechnology, materials testing, and industrial research. This refurbished Julabo FP50-HP from American Instrument Exchange offers a cost-effective alternative to new equipment while delivering the precision, reliability, and temperature stability for which Julabo circulators are known.

Julabo FP50-HP Refrigerated Heating Circulator Key Features

Julabo FP50-HP refrigerated heating circulator
Operating temperature range from -50°C to +200°C
8-liter stainless steel bath reservoir
Powerful refrigeration and 2 kW heating system
Cooling capacity of approximately 900 W at 20°C
PID microprocessor temperature controller
Temperature stability of ±0.01 to ±0.02°C
Adjustable pressure/suction circulation pump
Active Cooling Control for continuous refrigeration
Bright multi-display LED interface
RS-232 communication interface
Low liquid level warning and automatic shutdown
Refurbished and tested by American Instrument Exchange
90-day warranty included from American Instrument Exchange

Julabo FP50-HP Refrigerated Heating Circulator Overview

The Julabo FP50-HP is engineered to provide highly accurate temperature control for both internal bath applications and external closed-loop circulation. The integrated refrigeration and heating systems allow rapid transitions between low and high temperatures while maintaining outstanding stability throughout the operating range. Julabo's PID control algorithm continuously adjusts heater output and refrigeration performance to minimize temperature fluctuations, making the FP50-HP ideal for precision analytical testing, reactor temperature control, calibration work, and materials research. The powerful pressure/suction pump provides reliable circulation through external laboratory equipment including jacketed reactors, viscometers, condensers, spectrophotometers, and other temperature-controlled instruments.

Common Applications for the Julabo FP50-HP Refrigerated Heating Circulator

The Julabo FP50-HP is commonly used for reactor temperature control, chemical synthesis, pharmaceutical process development, viscosity testing, analytical chemistry, calibration laboratories, materials testing, environmental simulation, life science research, semiconductor applications, and external circulation for laboratory instruments requiring precise thermal regulation. Its wide temperature range allows laboratories to perform both cryogenic cooling and elevated-temperature heating using a single instrument.

Ideal Lab Types for the Julabo FP50-HP Refrigerated Heating Circulator

This refrigerated heating circulator is well suited for pharmaceutical manufacturers, biotechnology companies, university research laboratories, analytical chemistry laboratories, materials science laboratories, petrochemical laboratories, environmental testing facilities, industrial research departments, and government research institutions. Laboratories utilizing rotary evaporators, jacketed glass reactors, viscometers, analytical instruments, and laboratory water baths frequently incorporate Julabo refrigerated circulators into their temperature control workflows.

Julabo FP50-HP Refrigerated Heating Circulator Key Specifications

Specification	Details
Manufacturer	Julabo
Model	FP50-HP
Equipment Type	Refrigerated Heating Circulator
Temperature Range	-50°C to +200°C
Temperature Stability	±0.01 to ±0.02°C
Bath Capacity	8 Liters
Cooling Capacity	Approximately 900 W at 20°C
Heating Capacity	2 kW
Pump Type	Pressure/Suction Circulating Pump
Pump Flow Rate	Approximately 22-26 L/min
Controller	PID Microprocessor
Display	Multi-Display LED
Communications	RS-232
Bath Opening	7.1" × 4.7"
Overall Dimensions	16.5" W × 19.3" D × 27.6" H
Weight	Approximately 125 lbs
Electrical Requirements	230V, 60 Hz
Condition	Refurbished

Specifications compiled from Julabo manufacturer literature, distributor technical references, and American Instrument Exchange product information.

Refurbishment and Testing Process

At American Instrument Exchange, each refurbished refrigerated circulator is inspected and evaluated by our technicians prior to shipment. Testing procedures may include verification of refrigeration performance, heater operation, temperature stability, circulation pump performance, controller functionality, display operation, safety alarms, low-liquid protection, electrical safety testing, and overall operational evaluation. When practical, the unit is operated through both heating and cooling cycles to verify proper performance throughout its operating range. Components showing excessive wear are serviced or replaced as needed to help ensure dependable laboratory performance. Final cleaning and inspection are completed before packaging and shipment.

Shipping and Installation Considerations

The Julabo FP50-HP should be installed on a stable laboratory floor or bench with adequate clearance for airflow around the refrigeration system. Buyers should verify electrical compatibility before installation and use only Julabo-approved heat transfer fluids appropriate for the desired operating temperature range. When connected to external equipment, properly insulated tubing is recommended to maximize temperature stability and system efficiency. The circulator is carefully packaged to protect the refrigeration system, circulation pump, controller, and electronics during shipment.

Related Laboratory Equipment

Laboratories purchasing refrigerated circulators often also require jacketed glass reactors, rotary evaporators, laboratory chillers, water baths, analytical balances, centrifuges, and laboratory freezers. American Instrument Exchange offers a wide selection of refurbished laboratory equipment to support pharmaceutical development, analytical chemistry, biotechnology research, materials testing, and industrial laboratory applications.

Julabo FP50-HP Refrigerated Heating Circulator Frequently Asked Questions

Can the Julabo FP50-HP be used with external laboratory equipment?

Yes. The FP50-HP includes a powerful pressure/suction circulation pump that allows it to precisely control the temperature of jacketed reactors, condensers, viscometers, analytical instruments, and other closed-loop laboratory systems.

Can the circulator both heat and cool?

Yes. The FP50-HP combines a refrigeration system with a 2 kW heater, allowing continuous operation from -50°C to +200°C without changing equipment.

What makes Julabo circulators popular in research laboratories?

Julabo circulators are known for their excellent temperature stability, powerful circulation pumps, rapid heating and cooling performance, and reliable microprocessor control, making them suitable for demanding laboratory and industrial applications.

Can this unit be used as both a bath circulator and an external recirculator?

Yes. The FP50-HP is designed for both internal bath temperature control and external circulation applications, giving laboratories flexibility for a wide variety of experimental setups.

What warranty is included?

This refurbished Julabo FP50-HP Refrigerated Heating Circulator includes a 90-day warranty from American Instrument Exchange.

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.

Please contact our team at info@americaninstrument.com for more details.

FAQ

Does the equipment come with a warranty?

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.