The PolyScience WhisperCool N0772036 Recirculating Chiller is a high-capacity laboratory cooling system designed to provide reliable heat removal for analytical instruments, scientific equipment, and other externally cooled laboratory systems. With a -10°C to +40°C operating range, approximately 2,900 W of cooling capacity at 20°C, and circulation up to 13.2 L/min, the N0772036 provides substantially greater refrigeration capacity than many compact laboratory chillers.
Available used and refurbished from American Instrument Exchange, the PolyScience WhisperCool N0772036 combines powerful closed-loop cooling with approximately ±0.1°C temperature stability and quiet-operation technology intended for laboratory environments. It can serve as an efficient alternative to once-through facility-water cooling for compatible instruments while providing controlled coolant temperature and continuous recirculation. A 90-day warranty is included.
Key Features
-10°C to +40°C operating temperature range
Approximately ±0.1°C temperature stability
2,900 W cooling capacity at 20°C
1,000 W cooling capacity at 0°C
Maximum circulation flow of approximately 13.2 L/min
WhisperCool environmental control technology
Designed for reduced operating noise
Microprocessor-based temperature control
Digital temperature display
Digital pressure/flow monitoring
Closed-loop external equipment cooling
Designed for continuous laboratory operation
Potential alternative to once-through facility-water cooling
Compact footprint relative to cooling capacity
120 V, 60 Hz configuration
Used, refurbished, and tested by American Instrument Exchange
90-day warranty included
Overview
The PolyScience WhisperCool N0772036 is a refrigerated recirculating chiller designed to continuously remove heat from externally connected laboratory and analytical equipment. Rather than functioning as an immersion bath, the chiller cools and circulates heat-transfer fluid through a closed external loop.
A major advantage of the N0772036 is its refrigeration capacity. The system provides approximately 2.9 kW of cooling at a 20°C coolant temperature, allowing it to support substantially greater thermal loads than small benchtop chillers intended for light-duty applications.
The WhisperCool design also addresses another important consideration in laboratory cooling: noise. Refrigeration compressors, condenser fans, and circulation pumps can contribute significant background noise when a chiller is located near analytical equipment or laboratory personnel. WhisperCool technology is designed to reduce operating noise while adjusting system performance according to cooling demand.
Microprocessor-based temperature regulation and digital monitoring provide straightforward control of coolant temperature and circulation conditions.
Key Specifications
Specification
Details
Manufacturer
PolyScience
Model
N0772036
Series
WhisperCool
Equipment Type
Refrigerated recirculating chiller
Temperature Range
-10°C to +40°C
Temperature Stability
Approx. ±0.1°C
Cooling Capacity at 20°C
2,900 W
Cooling Capacity at 0°C
1,000 W
Maximum Flow Rate
Approx. 13.2 L/min
Temperature Control
Microprocessor-based
Display
Digital
Circulation Monitoring
Digital pressure/flow display
Condenser Cooling
Air-cooled
Exterior Dimensions
Approx. 15 in. W × 27.6 in. D × 22.6 in. H
Electrical Requirements
120 V, 60 Hz
Warranty
90 days
Common Applications
The PolyScience WhisperCool N0772036 is designed for applications requiring continuous removal of heat from externally connected laboratory equipment. Typical applications can include ICP and other spectroscopy systems, analytical instrumentation, lasers, laboratory reactors, condensers, vacuum equipment, heat exchangers, and other scientific instruments with liquid-cooling requirements.
Its approximately 2.9 kW cooling capacity at 20°C makes the N0772036 particularly relevant for equipment that generates substantially more heat than can be handled by smaller 200 W to 1,000 W laboratory chillers.
The system can also be used as an alternative to compatible once-through tap-water cooling applications. Instead of continuously drawing facility water and sending it to drain, the WhisperCool chills and recirculates a controlled volume of heat-transfer fluid through a closed loop.
This can reduce water consumption while providing more consistent coolant temperature than an uncontrolled facility-water supply.
Ideal Laboratory Types
The PolyScience N0772036 is well suited for analytical laboratories, pharmaceutical and biotechnology facilities, chemistry laboratories, spectroscopy facilities, materials-science groups, environmental testing laboratories, industrial R&D facilities, quality-control departments, and academic research laboratories.
It can be especially useful in laboratories where heat-generating analytical instruments operate for extended periods and require a dedicated cooling source.
The WhisperCool design is also advantageous when the chiller must be installed within or near occupied laboratory space, where excessive compressor and fan noise can become disruptive.
Temperature Control & Stability
The PolyScience WhisperCool N0772036 provides controlled coolant temperatures from approximately -10°C to +40°C with temperature stability of approximately ±0.1°C.
Available cooling capacity changes substantially with operating temperature. The system provides approximately 2,900 W of refrigeration capacity at 20°C but approximately 1,000 W at 0°C.
This relationship is critical when sizing a recirculating chiller. A process generating a 2 kW heat load may be well within the capabilities of the N0772036 around normal laboratory temperatures but could exceed the chiller's refrigeration capacity when substantially colder coolant is required.
Buyers should therefore compare the thermal load of their equipment with the chiller's available cooling capacity at the intended coolant temperature rather than relying only on its maximum 2.9 kW rating.
Circulation & Pump Performance
The PolyScience N0772036 provides circulation up to approximately 13.2 L/min for compatible external cooling loops.
Actual flow through connected equipment depends on the hydraulic resistance of the complete cooling circuit. Tubing diameter and length, fittings, elevation, heat-transfer-fluid viscosity, coolant temperature, and restrictions within the connected instrument can all affect actual operating flow.
This is particularly important with analytical equipment that specifies both minimum coolant flow and maximum allowable inlet pressure.
Before connecting the N0772036 to sensitive laboratory instrumentation, users should compare the cooling requirements of the instrument with the chiller's circulation characteristics.
If your application has a specific flow or pressure requirement, American Instrument Exchange can help verify the performance of the individual chiller before shipment.
Refurbishment & Testing
This used PolyScience WhisperCool N0772036 Recirculating Chiller is refurbished and tested by American Instrument Exchange before shipment. Our technicians inspect the refrigeration system, circulation pump, temperature controller, display, reservoir, condenser, electrical components, safety systems, and external fluid connections.
Temperature-controlled equipment is tested using NIST-traceable probes and data loggers. The refrigeration system is operated for extended periods to evaluate cooling performance, circulation, temperature regulation, controller operation, and system stability.
The reservoir and accessible fluid-contact areas are cleaned and inspected prior to shipment.
If your application requires operation at a particular temperature or has specific flow, pressure, or testing requirements, contact American Instrument Exchange before shipment. When practical, our technicians can incorporate customer-requested operating conditions into final testing.
A 90-day warranty is included with this refurbished PolyScience recirculating chiller.
Choosing the Right Recirculating Chiller
Cooling capacity at the required operating temperature is one of the most important considerations when choosing a recirculating chiller.
The PolyScience N0772036 provides approximately 2.9 kW of cooling at 20°C, placing it above many compact laboratory chillers in heat-removal capability. This makes it a strong candidate for analytical instruments and other equipment with moderate to relatively high continuous thermal loads.
However, cooling capacity decreases as coolant temperature falls. At 0°C, the N0772036 provides approximately 1.0 kW of cooling. Applications requiring substantial heat removal at subzero temperatures may therefore require a different chiller despite the N0772036's -10°C minimum operating temperature.
Flow requirements should also be considered. The N0772036 provides circulation up to approximately 13.2 L/min, but actual delivered flow will depend on the resistance of the connected system.
American Instrument Exchange can help compare available used and refurbished laboratory chillers based on required coolant temperature, thermal load, flow, pressure, electrical service, and instrument compatibility.
Related Equipment
American Instrument Exchange stocks a range of laboratory circulators, including PolyScience recirculating chillers, refrigerated/heated bath circulators, immersion circulators, and process temperature-control systems. Laboratories using the WhisperCool N0772036 may also require reactors and fermenters, evaporators and extractors, laboratory water baths, or other refurbished laboratory equipment.
What is the temperature range of the PolyScience N0772036?
The PolyScience WhisperCool N0772036 operates from approximately -10°C to +40°C, allowing controlled cooling both below and near normal laboratory ambient temperatures.
How much cooling capacity does the N0772036 provide?
The N0772036 provides approximately 2,900 W of cooling capacity at 20°C and approximately 1,000 W at 0°C. Available refrigeration capacity decreases as coolant temperature falls.
What is the maximum flow rate of the N0772036?
The chiller provides circulation up to approximately 13.2 L/min. Actual flow through connected equipment depends on the hydraulic resistance of the external cooling loop.
What is WhisperCool technology?
PolyScience developed the WhisperCool system to reduce the operating noise associated with refrigeration and cooling equipment while adjusting system performance to meet cooling demand. This can be particularly useful when a chiller is installed near laboratory personnel or sensitive analytical equipment.
Can the PolyScience N0772036 replace tap-water cooling?
In many compatible applications, yes. The chiller recirculates refrigerated heat-transfer fluid through a closed loop, potentially eliminating continuous consumption and discharge of facility water.
Is the N0772036 suitable for analytical instruments?
Yes. Recirculating chillers in this performance class are commonly used with analytical instruments and other laboratory equipment requiring continuous liquid cooling. The instrument's required coolant temperature, flow, pressure, and heat load should be verified before connection.
Is the N0772036 a circulating water bath?
No. The N0772036 is primarily an external recirculating chiller. It is designed to remove heat from externally connected equipment rather than serve as an open bath for direct sample immersion.
Does this refurbished PolyScience N0772036 include a warranty?
Yes. This used PolyScience WhisperCool N0772036 is refurbished and tested by American Instrument Exchange and includes a 90-day warranty.
CLICK HEREto see the PolyScience WhisperCool N0772036 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.
