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JULABO FL1701 Recirculating Chiller
The JULABO FL1701 Recirculating Chiller is a high-capacity laboratory cooling system designed for reliable closed-loop temperature control of analytical instruments, condensers, reactors, laboratory processes, and other heat-generating equipment. With a -20°C to +40°C working temperature range, up to 1.7 kW of cooling capacity at +20°C, approximately ±0.5°C temperature stability, and circulation flow up to 23 L/min, the FL1701 provides substantial cooling performance for routine laboratory and process applications.
Designed for installation beneath a laboratory bench, the FL1701 combines strong refrigeration performance with a relatively space-efficient footprint. Its 12–17 L stainless-steel reservoir, microprocessor PID temperature controller, centrifugal circulation pump, RS232 interface, and integrated safety features make it a versatile alternative to both smaller instrument chillers and once-through facility-water cooling.
Available used and refurbished from American Instrument Exchange, this JULABO FL1701 is inspected and tested for refrigeration, circulation, temperature control, and overall operating performance. A 90-day warranty is included.
Key Features
-20°C to +40°C working temperature range
Approximately ±0.5°C temperature stability
1.7 kW cooling capacity at +20°C
1.5 kW cooling capacity at +10°C
1.1 kW cooling capacity at 0°C
850 W cooling capacity at -10°C
400 W cooling capacity at -20°C
Maximum circulation flow approximately 23 L/min
Maximum pump pressure approximately 1 bar / 14.5 psi
12–17 L filling volume
Stainless-steel internal reservoir
Microprocessor PID temperature control
0.1°C setting and display resolution
Large LED temperature display
RS232 interface for compatible computer connection
Low-liquid protection with visual and audible alarm
Front-accessible drain
Designed for space-saving under-bench installation
Refurbished and tested by American Instrument Exchange
90-day warranty included
Overview
The JULABO FL1701 is a refrigerated recirculating chiller designed primarily to remove heat from compatible external laboratory and process equipment.
Temperature-controlled fluid is pumped from the FL1701 through the connected equipment, where it absorbs process heat. The warmed coolant returns to the chiller, where the integrated refrigeration system removes the accumulated heat before the fluid is recirculated.
This closed-loop configuration provides a reusable source of temperature-controlled coolant and can reduce or eliminate dependence on continuous facility-water cooling.
With up to approximately 1.7 kW of refrigeration capacity, the FL1701 can support significantly larger heat loads than many compact benchtop instrument chillers. At the same time, its 23 L/min circulation system is well suited for applications that require substantial coolant flow without the higher pump pressures provided by some larger process chillers.
JULABO designed the FL1701 specifically for under-bench installation. The absence of side ventilation openings allows equipment to be positioned directly alongside the chiller where installation conditions permit, helping conserve valuable laboratory floor and bench space.
Key Specifications
Specification
Details
Manufacturer
JULABO
Model
FL1701
Series
FL
Equipment Type
Refrigerated recirculating chiller
Working Temperature Range
-20°C to +40°C
Temperature Stability
Approx. ±0.5°C
Setting Resolution
0.1°C
Display Resolution
0.1°C
Cooling Capacity at +20°C
Approx. 1.7 kW / 1,700 W
Cooling Capacity at +10°C
Approx. 1.5 kW / 1,500 W
Cooling Capacity at 0°C
Approx. 1.1 kW / 1,100 W
Cooling Capacity at -10°C
Approx. 0.85 kW / 850 W
Cooling Capacity at -20°C
Approx. 0.40 kW / 400 W
Maximum Pump Flow
Approx. 23 L/min
Maximum Pump Pressure
Approx. 1 bar / 14.5 psi
Filling Volume
Approx. 12–17 L
Reservoir
Stainless steel
Pump Type
Centrifugal
Pump Connections
M16 × 1 male
Hose Barb ID
8 / 12 mm
Maximum Return Temperature
+80°C
Temperature Control
Microprocessor PID
Display
LED
Computer Interface
RS232
Refrigeration
Single-stage, air-cooled
Approximate Dimensions
19.7"W × 29.9"D × 25.2"H
Approximate Weight
172–187 lb, depending on configuration/generation
Electrical Requirements
115 V, 60 Hz for AIE unit; verify nameplate
Warranty
90 days
Common Applications
The JULABO FL1701 is suitable for a broad range of laboratory and process applications requiring continuous heat removal. Typical uses include analytical instrument cooling, rotary evaporator and condenser cooling, reactor temperature control, chemical synthesis, distillation equipment, vacuum systems, laser cooling, materials testing, process-development equipment, and general laboratory process cooling.
Its 1.7 kW maximum cooling capacity makes the FL1701 particularly useful when a small instrument chiller does not provide enough heat-removal capacity.
The FL1701 can also replace once-through facility-water cooling in compatible applications. Instead of continuously drawing fresh water and discharging it to a drain, the chiller recirculates the same heat-transfer fluid through a closed cooling loop.
This can reduce laboratory water consumption while providing more consistent coolant temperatures that are independent of seasonal changes in facility-water temperature.
Ideal Laboratory Types
The JULABO FL1701 is well suited for pharmaceutical and biotechnology facilities, chemistry laboratories, analytical laboratories, process-development groups, materials-science facilities, industrial R&D departments, pilot laboratories, manufacturing support laboratories, and academic research environments.
Its combination of substantial refrigeration capacity and moderate-pressure circulation makes it particularly useful for equipment requiring relatively high coolant flow without exceptionally high pressure.
The under-bench configuration is also valuable in laboratories where equipment density is high and available working space must be used efficiently.
Performance & Temperature Stability
The JULABO FL1701 provides a working temperature range of approximately -20°C to +40°C with specified temperature stability of approximately ±0.5°C. Microprocessor PID regulation controls coolant temperature, while the digital display provides 0.1°C setting and display resolution.
Cooling capacity varies substantially with operating temperature.
The FL1701 provides approximately 1.7 kW of cooling capacity at +20°C, 1.5 kW at +10°C, 1.1 kW at 0°C, 850 W at -10°C, and 400 W at -20°C.
This cooling curve is particularly important when sizing the FL1701 for an application. Although the chiller can operate at -20°C, it cannot remove the same amount of process heat at -20°C that it can at +20°C.
For example, a continuous 1 kW heat load falls within the published cooling capability around 0°C but substantially exceeds the available 400 W capacity at -20°C.
Chiller selection should therefore be based on the required cooling capacity at the intended coolant temperature rather than simply the maximum 1.7 kW rating.
The FL1701 provides maximum circulation flow of approximately 23 L/min and maximum pump pressure of approximately 1 bar, or 14.5 psi. Actual delivered flow depends on tubing diameter and length, fittings, coolant viscosity, temperature, elevation, and resistance within the connected equipment.
Refurbishment & Testing
This used JULABO FL1701 Recirculating Chiller is refurbished and tested by American Instrument Exchange before shipment. Our technicians inspect the compressor, condenser, refrigeration circuit, circulation pump, stainless-steel reservoir, PID temperature controller, LED display, fluid-level system, external connections, electrical components, housing, and applicable safety systems.
Temperature-controlled equipment is tested using NIST-traceable probes and data loggers. The FL1701 is operated under simulated laboratory conditions to evaluate temperature pull-down, refrigeration performance, circulation, temperature regulation, controller operation, alarms, and overall system reliability.
The reservoir and accessible fluid-contact components are cleaned and inspected before shipment.
Customers requiring the FL1701 for a specific instrument or process are encouraged to provide the required coolant temperature, estimated continuous heat load, minimum flow, pressure requirements, and intended heat-transfer fluid. When practical, American Instrument Exchange can incorporate customer-requested operating conditions into final testing.
A 90-day warranty is included with this refurbished JULABO recirculating chiller.
Shipping & Installation
The JULABO FL1701 is a substantial under-bench recirculating chiller weighing approximately 175–185 lb depending on configuration and production generation. American Instrument Exchange prepares the unit for commercial freight shipment with appropriate protection for the refrigeration system, controller, housing, pump, and fluid connections.
The cooling circuit should be drained before transportation and filled with an appropriate heat-transfer fluid after installation. Fluid selection should be based on the intended operating temperature, particularly for applications below the freezing point of water.
The FL1701 is designed without side ventilation openings, allowing units or other equipment to be positioned alongside the chiller. Appropriate front and rear airflow and service access should still be maintained according to manufacturer requirements.
The AIE unit operates on 115 V, 60 Hz power. Because JULABO manufactured the FL1701 in multiple voltage configurations, customers should confirm the electrical nameplate before installation.
External coolant tubing should be securely connected and inspected for leaks before operation.
Related Equipment
American Instrument Exchange stocks a range of laboratory circulators, including JULABO recirculating chillers, refrigerated/heated circulators, immersion coolers, and process temperature-control systems. Laboratories considering the JULABO FL1701 may also want to compare available laboratory water baths, reactors and fermenters, evaporators and extractors, and other refurbished laboratory equipment.
JULABO FL1701 Frequently Asked Questions
What is the temperature range of the JULABO FL1701?
The JULABO FL1701 provides a working temperature range of approximately -20°C to +40°C.
How much cooling capacity does the FL1701 provide?
Cooling capacity depends on operating temperature. JULABO specifies approximately 1.7 kW at +20°C, 1.5 kW at +10°C, 1.1 kW at 0°C, 850 W at -10°C, and 400 W at -20°C.
How much cooling capacity does the FL1701 provide at 0°C?
The FL1701 provides approximately 1.1 kW, or 1,100 W, of cooling capacity at a 0°C coolant temperature.
What is the temperature stability of the FL1701?
JULABO specifies temperature stability of approximately ±0.5°C.
What is the maximum flow rate of the FL1701?
The FL1701 provides maximum circulation flow of approximately 23 L/min.
What is the maximum pump pressure?
Maximum pump pressure is approximately 1 bar, equivalent to approximately 14.5 psi.
What is the reservoir capacity of the FL1701?
JULABO specifies a filling volume of approximately 12–17 L. The internal reservoir is constructed from stainless steel.
Can the JULABO FL1701 cool a laboratory reactor?
Yes, provided the reactor's required coolant temperature, continuous heat load, flow, and pressure are within the FL1701's operating capabilities. The temperature-specific cooling curve should be used when evaluating compatibility.
Can the FL1701 be used with a rotary evaporator?
Yes. The FL1701 can provide recirculating coolant for compatible rotary evaporator condensers and offers substantially more cooling capacity than many compact rotavap chillers.
Can the FL1701 replace tap-water cooling?
For compatible applications, yes. The FL1701 uses a closed-loop coolant circuit and can reduce or eliminate the continuous water consumption associated with once-through facility-water cooling.
Can the FL1701 communicate with a computer?
Yes. The FL1701 includes an RS232 interface for compatible computer communication and control.
Can the JULABO FL1701 be installed under a laboratory bench?
Yes. JULABO specifically designed the FL1701 as an under-bench recirculating chiller. The lack of side ventilation openings helps conserve laboratory space.
What is the difference between the JULABO FL1701 and FL1703?
Both models provide approximately 1.7 kW of maximum cooling capacity and use similar under-bench platforms. The primary difference is circulation performance. The FL1701 provides approximately 23 L/min at up to 1 bar, while the FL1703 uses a more powerful circulation system for applications requiring greater flow and pressure.
Is the JULABO FL1701 still manufactured?
The FL1701 is a discontinued JULABO model. Refurbished FL1701 chillers can remain a practical option for laboratories that need its combination of 1.7 kW cooling capacity, -20°C operation, and 23 L/min circulation without purchasing a new process chiller.
Does this refurbished JULABO FL1701 include a warranty?
Yes. This used JULABO FL1701 is refurbished and tested by American Instrument Exchange and includes a 90-day warranty.
CLICK HERE to see the JULABO FL1701 recirculating chiller on our 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.
