Huber Unistat Tango Chiller

Brand : Huber

Product Code : SKU 1497L CIRC

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Huber Unistat Tango Dynamic Temperature Control System

The Huber Unistat Tango is a high-performance dynamic temperature control system designed for precise heating and cooling of externally connected laboratory equipment. With an operating temperature range of -45°C to +200°C, temperature stability of approximately 0.02 K at -10°C, and a powerful circulation pump capable of delivering up to 55 L/min, the Unistat Tango is particularly well suited for demanding reactor temperature control and process-development applications.

Available used and refurbished from American Instrument Exchange, this Huber Unistat Tango, model UC012TW, provides rapid temperature changes and precise process control without relying on a conventional thermoregulated bath. Its hydraulically sealed design, low fluid volume, powerful circulation system, and programmable electronic controller make it an excellent choice for laboratories working with jacketed reactors and other externally temperature-controlled systems. A 90-day warranty is included.

Key Features

Wide -45°C to +200°C operating temperature range
Temperature stability of approximately 0.02 K at -10°C
Maximum pressure-pump flow rate of 55 L/min
Dynamic temperature control optimized for external applications
Low 1.5 L minimum filling volume
2.8 L expansion volume
Hydraulically sealed temperature-control circuit
Programmable Unistat electronic controller
Safety monitoring for continuous operation
Used, refurbished, and tested by American Instrument Exchange
90-day warranty included

Overview

The Huber Unistat Tango differs significantly from a conventional refrigerated circulating water bath. Rather than maintaining a large open bath of temperature-controlled fluid, the Unistat system uses a relatively small fluid volume and an expansion vessel to provide rapid and precise temperature control to externally connected equipment.

This design is particularly effective for controlling jacketed research reactors, where the objective is to change and maintain the temperature of a process as quickly and accurately as possible. Reducing the internal volume that must be heated or cooled allows the Tango to respond rapidly to changing process conditions while its powerful circulation pump transfers thermal energy between the Unistat and the connected application.

The hydraulically sealed system also helps protect temperature-control fluid from unnecessary exposure to the surrounding atmosphere. This can reduce fluid loss through vaporization and help limit oxidation and moisture absorption during extended operation.

Key Specifications

Specification	Details
Manufacturer	Huber
Model	Unistat Tango UC012TW
Equipment Type	Dynamic temperature control system / circulation thermostat
Temperature Range	-45°C to +200°C
Temperature Stability	Approximately 0.02 K at -10°C
Minimum Filling Volume	1.5 L
Expansion Volume	2.8 L
Maximum Pump Flow	55 L/min
Circulation Type	Pressure pump
Controller	Unistat electronic controller
Dimensions	16.75 in. W × 12.67 in. D × 24.75 in. H
Electrical Requirements	230 VAC, 50 Hz, 16 A
Application Type	External temperature control
Warranty	90 days

Common Applications

The Huber Unistat Tango is especially well suited for precise temperature control of jacketed laboratory reactors used in chemical synthesis, pharmaceutical development, process chemistry, scale-up studies, and materials research. The combination of rapid heating and cooling, high circulation rates, and precise temperature control allows researchers to reproduce demanding process conditions while minimizing temperature overshoot and lengthy stabilization periods.

Other applications can include temperature control of reaction vessels, process equipment, analytical systems, test fixtures, and other externally connected laboratory apparatus requiring controlled heating and cooling.

Because the Unistat Tango is designed as a dynamic temperature control system rather than a conventional open circulating bath, it is particularly valuable when the temperature of an external process—not an internal reservoir—is the primary concern.

Ideal Laboratory Types

The Unistat Tango is a strong fit for pharmaceutical and biopharmaceutical process-development laboratories, chemical research facilities, process chemistry groups, materials-science laboratories, industrial R&D facilities, pilot laboratories, academic chemistry departments, and other research environments working with temperature-controlled reactions.

It is especially useful for laboratories operating jacketed glass reactors where rapid thermal response, precise control, and reliable circulation are important to experimental reproducibility.

Temperature Control & Stability

Dynamic temperature control is the defining capability of the Huber Unistat platform. Instead of relying on a large thermoregulated bath, the Tango minimizes the quantity of circulating fluid within the temperature-control system. This allows heating and refrigeration capacity to act more directly on the external process.

The AIE inventory unit is specified for operation from -45°C to +200°C, providing a broad working range for both sub-ambient and elevated-temperature processes. Temperature stability is approximately 0.02 K at -10°C.

For reactor applications, actual process performance also depends on factors beyond the circulator itself. Reactor volume, jacket design, heat-transfer fluid, circulation rate, hose length, insulation, process heat generation, and ambient conditions can all influence heating and cooling rates.

Circulation & Pump Performance

The Unistat Tango provides a maximum pump flow rate of approximately 55 L/min, allowing substantial circulation through compatible external equipment. Strong circulation promotes efficient heat transfer between the temperature-control fluid and the external process while helping minimize temperature differences throughout the circulation loop.

The system's pump is designed specifically for external temperature-control applications such as jacketed reactors. Actual flow through an installed system will depend on the resistance of the reactor jacket, tubing diameter and length, fittings, temperature-control fluid, viscosity, and other hydraulic restrictions.

The Unistat design also incorporates soft-start pump operation. This is particularly useful when connecting the system to delicate glass reactors because circulation can be established without immediately subjecting the reactor jacket to maximum pump output.

Refurbishment & Testing

This used Huber Unistat Tango is refurbished and tested by American Instrument Exchange before shipment. Our technicians inspect the refrigeration, heating, circulation, temperature-control, electrical, and user-interface systems and operate the unit to confirm proper functionality.

Because the Tango provides both heating and cooling, AIE performs extended testing at both ends of the operating range when evaluating the system. Temperature-controlled equipment is tested using appropriate temperature-measurement equipment, and pump operation and fluid circulation are evaluated as part of the inspection process.

If your laboratory intends to use the Tango under specific operating conditions, contact American Instrument Exchange before shipment. When practical, our technicians can attempt to simulate your intended conditions during final testing.

A 90-day warranty is included with this refurbished Huber temperature control system.

Choosing the Right Dynamic Temperature Control System

When selecting a dynamic temperature control system for a laboratory reactor, buyers should consider more than the circulator's published minimum and maximum temperatures. Reactor volume, required heating and cooling rates, process heat load, circulation requirements, jacket configuration, temperature-control fluid, and electrical requirements can all influence performance.

The Huber Unistat Tango is particularly well suited for applications where rapid response and precise external process control are more important than having a conventional open temperature-controlled bath. Its low internal fluid volume and high-flow circulation system are designed to efficiently transfer heating and cooling capacity to an external process.

For laboratories primarily incubating samples in a controlled reservoir, a conventional circulating water bath may be more appropriate. For reactor chemistry and process-development work, however, a dynamic temperature control system such as the Unistat Tango offers significant advantages.

American Instrument Exchange can help compare available used and refurbished circulators and temperature control systems based on reactor size, target temperature, thermal load, circulation requirements, and application.

Related Equipment

American Instrument Exchange stocks a variety of laboratory circulators for heating, cooling, and external process temperature control. Laboratories using a Huber Unistat may also require reactors and fermenters, evaporators and extractors, laboratory water baths, or other refurbished laboratory equipment for chemical synthesis and process-development applications.

Huber Unistat Tango Frequently Asked Questions

What is the temperature range of this Huber Unistat Tango?

This Huber Unistat Tango UC012TW is specified for an operating temperature range of -45°C to +200°C, allowing it to provide both sub-ambient cooling and elevated-temperature process control.

What is a dynamic temperature control system?

A dynamic temperature control system is designed primarily to rapidly heat, cool, and stabilize an external process rather than maintain a large internal bath at a fixed temperature. This makes systems such as the Unistat Tango particularly useful for controlling jacketed laboratory reactors.

Can the Huber Unistat Tango control a jacketed glass reactor?

Yes. Precise temperature control of research reactors is one of the primary applications for the Unistat Tango. Its high circulation rate and dynamic heating and cooling capabilities make it particularly well suited for jacketed reactor systems.

What is the maximum pump flow rate of the Unistat Tango?

The Tango provides a maximum circulation flow rate of approximately 55 L/min. Actual flow through a reactor or other external system will depend on tubing, fittings, fluid viscosity, reactor-jacket resistance, and other installation factors.

Why doesn't the Unistat Tango use a conventional temperature-controlled bath?

The Unistat design uses an expansion vessel and relatively low internal fluid volume instead of a conventional thermoregulated bath. Reducing the quantity of fluid that must be heated or cooled helps the system respond more quickly to changes in process temperature.

Can the Huber Unistat Tango both heat and cool?

Yes. The Unistat Tango is a heating and refrigerated dynamic temperature control system. This allows a single unit to move a connected process through both below-ambient and elevated-temperature conditions.

Does this refurbished Huber Unistat Tango include a warranty?

Yes. This used Huber Unistat Tango is refurbished and tested by American Instrument Exchange and includes a 90-day warranty.

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.