Lauda UKT Refrigerated Circulating Chiller

LAUDA UKT Refrigerated Recirculating Chiller

Brand : Lauda

Product Code : SKU 1501G CIRC

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LAUDA UKT Refrigerated Recirculating Chiller

The LAUDA UKT Refrigerated Recirculating Chiller is a laboratory and process cooling system designed to remove heat from analytical instruments, research equipment, chemical processes, and other temperature-sensitive systems. Part of LAUDA's established UKT series of circulation cooling units, these systems combine mechanical refrigeration, an integrated coolant reservoir, active fluid circulation, and temperature control in a durable platform designed for continuous laboratory and technical use.

Unlike an open cooling-water supply, the LAUDA UKT operates as a recirculating closed-loop system. Coolant is continuously pumped through compatible external equipment and returned to the chiller, providing a stable and reusable source of cooling while reducing dependence on laboratory tap water.

Available used and refurbished from American Instrument Exchange, this LAUDA UKT is inspected and tested for reliable cooling, circulation, and temperature-control performance. A 90-day warranty is included.

Key Features

Refrigerated recirculating chiller
Part of the established LAUDA UKT circulation cooling series
Designed for closed-loop external cooling
Integrated refrigeration system
Active coolant circulation
Suitable for continuous laboratory and process cooling
Provides consistent cooling independent of seasonal tap-water temperature
Can reduce laboratory water consumption
Designed for analytical instruments and technical equipment
Useful for reaction and process cooling
Compact, self-contained cooling system
Durable legacy LAUDA construction
Used, refurbished, and tested by American Instrument Exchange
90-day warranty included

Overview

The LAUDA UKT series was developed as a family of dedicated circulation cooling units for applications requiring reliable removal of operating heat.

Rather than providing an open bath primarily intended for direct sample immersion, UKT systems are designed principally to circulate cooled heat-transfer fluid through compatible external equipment. The coolant absorbs heat from the connected instrument or process before returning to the chiller, where the refrigeration system removes the accumulated heat.

This closed-loop arrangement makes the UKT useful as an alternative to continuous tap-water cooling.

LAUDA produced multiple UKT configurations with different refrigeration capacities, reservoir sizes, circulation pumps, electrical requirements, and cooling arrangements. Models within the family included compact laboratory chillers as well as substantially larger process-cooling systems.

For that reason, buyers should verify the complete model designation and nameplate information of an individual UKT before selecting it for an application with specific cooling-capacity or pump-performance requirements.

Key Specifications

Specification	Details
Manufacturer	LAUDA
Series	UKT
Equipment Type	Refrigerated recirculating chiller
Cooling Method	Mechanical refrigeration
Circulation	Closed-loop external circulation
Internal Reservoir	Yes
Heating	Model/configuration dependent
Air/Water Cooling	Model/configuration dependent
Temperature Range	Model dependent
Cooling Capacity	Model dependent
Maximum Pump Flow	Model dependent
Maximum Pump Pressure	Model dependent
Reservoir Capacity	Model dependent
Electrical Requirements	Verify individual unit nameplate
Exact UKT Submodel	Verify individual unit nameplate
Warranty	90 days

Common Applications

LAUDA UKT circulation chillers can be used for a wide range of laboratory, research, analytical, and industrial cooling applications.

Typical uses include cooling rotary evaporators, condensers, analytical instruments, reaction systems, vacuum equipment, distillation apparatus, optical equipment, electron microscopes, X-ray equipment, refractometers, cooling traps, and other instruments that generate heat during operation.

A UKT chiller can also supply temperature-controlled coolant to jacketed vessels and experimental systems where process heat must be removed continuously.

Because the system recirculates coolant rather than discharging it after a single pass, it can be especially useful for laboratories looking to replace continuous tap-water cooling with a more consistent closed-loop system.

Ideal Laboratory Types

The LAUDA UKT is suitable for chemistry laboratories, pharmaceutical research facilities, biotechnology companies, analytical laboratories, materials-science groups, industrial R&D departments, process-development laboratories, academic research facilities, and other environments requiring dependable equipment cooling.

It can be particularly valuable in laboratories operating analytical or process equipment continuously, where fluctuations in building cooling-water temperature or pressure could interfere with instrument performance.

The UKT series may also be useful for laboratories maintaining legacy experimental systems originally configured around LAUDA circulation cooling equipment.

Temperature Control & Cooling Performance

LAUDA manufactured the UKT family in several cooling-capacity classes, so temperature range and refrigeration performance depend on the exact UKT model.

This distinction is important when evaluating a used system.

The minimum attainable temperature alone does not determine whether a chiller is suitable for an application. Available cooling capacity decreases as coolant temperature falls, while the connected equipment may continuously add heat to the loop.

A properly selected chiller must therefore provide sufficient cooling capacity at the actual required operating temperature.

Ambient conditions, coolant selection, fluid flow, tubing configuration, reservoir volume, and process heat load can also influence real-world cooling performance.

Customers considering this LAUDA UKT for a specific application should provide American Instrument Exchange with the desired coolant temperature and estimated heat load so that the unit's exact configuration can be evaluated before purchase.

Circulation & Pump Performance

The LAUDA UKT series uses an integrated circulation pump to move temperature-controlled fluid through compatible external equipment.

LAUDA offered UKT models with different pump capacities, and certain versions were specifically identified by a “P” designation indicating a higher-performance pump configuration.

Pump performance should therefore be verified from the exact model rather than inferred from another UKT-series chiller.

Flow rate is particularly important for analytical instruments and processes that require a minimum coolant flow. Pressure capability may also become important when coolant must pass through restrictive tubing, narrow internal passages, elevated equipment, or complex external circuits.

For best results, tubing diameter and length should be selected to minimize unnecessary hydraulic resistance while remaining compatible with the chiller and connected equipment.

Refurbishment & Testing

This used LAUDA UKT Refrigerated Recirculating Chiller is refurbished and tested by American Instrument Exchange before shipment. Our technicians inspect the refrigeration system, compressor, condenser, circulation pump, reservoir, temperature controller, fluid connections, electrical components, housing, and associated safety systems.

Temperature-controlled equipment is tested using NIST-traceable probes and data loggers. The UKT is operated under simulated laboratory conditions to evaluate cooling, circulation, temperature regulation, controller operation, and overall system performance.

The reservoir and accessible fluid-contact components are cleaned and inspected before shipment.

Customers requiring the chiller for a particular instrument or process are encouraged to provide the required coolant temperature, approximate heat load, minimum flow rate, and any pressure requirements. When practical, American Instrument Exchange can incorporate customer-requested operating conditions into final testing.

A 90-day warranty is included with this refurbished LAUDA recirculating chiller.

Choosing the Right Recirculating Chiller

The LAUDA UKT is best suited to applications that require continuous closed-loop cooling of external laboratory or process equipment.

Compared with tap-water cooling, a dedicated recirculating chiller provides greater control over coolant temperature and eliminates variations caused by seasonal changes in incoming water temperature. It can also substantially reduce water consumption because the coolant is continuously reused rather than discharged to a drain.

Selecting the correct UKT requires more than simply choosing a desired temperature range. Buyers should consider the amount of heat generated by the connected equipment, required coolant temperature, minimum flow, pressure requirements, reservoir volume, coolant compatibility, ambient conditions, and electrical service.

This is particularly important with the UKT series because LAUDA manufactured several substantially different models under the same product-family designation.

For lower-heat-load analytical applications, a compact UKT model may be sufficient. Larger process equipment, reactors, or multiple connected instruments may require one of the higher-capacity UKT systems.

American Instrument Exchange can help compare this unit with other available LAUDA and laboratory recirculating chillers based on the requirements of the intended application.

Related Equipment

American Instrument Exchange stocks a range of laboratory circulators, including LAUDA recirculating chillers, refrigerated/heated bath circulators, immersion coolers, and process temperature-control systems. Laboratories considering this LAUDA UKT may also want to compare available laboratory water baths, reactors and fermenters, evaporators and extractors, and other refurbished laboratory equipment.

LAUDA UKT Refrigerated Recirculating Chiller Frequently Asked Questions

What is a LAUDA UKT chiller?

The LAUDA UKT series consists of refrigerated circulation cooling units designed to provide closed-loop cooling for compatible laboratory, analytical, and process equipment.

Is the LAUDA UKT a refrigerated bath circulator?

The UKT series is primarily designed as a circulation cooling system for external equipment rather than as a conventional open refrigerated bath for direct sample immersion.

What is the temperature range of the LAUDA UKT?

The exact temperature range depends on the specific UKT model and configuration. The complete model designation should be verified before selecting a unit for a particular operating temperature.

How much cooling capacity does a LAUDA UKT provide?

Cooling capacity varies significantly across the UKT product family. The exact model must be identified to determine available cooling capacity, particularly at temperatures below ambient.

Can a LAUDA UKT replace tap-water cooling?

For many compatible applications, yes. A closed-loop recirculating chiller can provide a consistent source of coolant while reducing or eliminating continuous consumption of laboratory tap water.

What equipment can be cooled with a LAUDA UKT?

Potential applications include analytical instruments, rotary evaporators, condensers, reaction systems, distillation equipment, electron microscopes, X-ray equipment, optical instruments, cooling traps, and other equipment designed for external liquid cooling.

Does the LAUDA UKT have an integrated circulation pump?

Yes. UKT systems use an integrated pump to circulate coolant through compatible external equipment. Pump flow and pressure depend on the exact model and configuration.

What does the “P” designation mean on some LAUDA UKT models?

Historical LAUDA documentation indicates that certain UKT models were available in “P” versions equipped with a more powerful circulation pump.

What information should I provide when selecting a recirculating chiller?

Useful information includes the required coolant temperature, expected heat load, minimum coolant flow, required pressure, coolant type, electrical service, and the equipment being cooled.

Does this refurbished LAUDA UKT include a warranty?

Yes. This used LAUDA UKT Refrigerated Recirculating Chiller 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.