Lauda Variocool VC 2000 Recirculating Chiller

Brand : Lauda

Product Code : SKU 1506C CIRC

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Lauda Variocool VC 2000 Recirculating Chiller

The Lauda Variocool VC 2000 is a high-performance recirculating chiller designed for precise temperature control in laboratory, research, industrial, and process applications. With an operating temperature range of -20°C to +40°C and a maximum circulation flow rate of 28 L/min, the VC 2000 provides both cooling and fluid circulation for externally connected laboratory instruments and temperature-controlled processes.

Available used and refurbished from American Instrument Exchange, this Lauda recirculating chiller is inspected, cleaned, and tested prior to shipment. The Variocool platform combines refrigeration, fluid circulation, electronic temperature control, and a compact footprint, making it a versatile alternative to purchasing a new laboratory circulator or process chiller. A 90-day warranty is included.

Key Features

Operating temperature range from -20°C to +40°C
Maximum circulation flow rate of 28 L/min
8–15 L filling volume
Air-cooled refrigeration system
Color TFT display for straightforward operation and monitoring
Designed for external temperature-control and process-cooling applications
Adjustable bypass for pressure-sensitive applications
Used, refurbished, and performance-tested by American Instrument Exchange
90-day warranty included

Overview

The Lauda Variocool VC 2000 is a refrigerated recirculating circulator engineered to remove heat from external laboratory equipment while maintaining controlled fluid temperatures. Unlike a conventional laboratory water bath that primarily controls samples placed directly into a bath chamber, the VC 2000 can circulate temperature-controlled fluid through external equipment using its integrated pump.

This configuration makes the Variocool particularly useful for applications requiring continuous heat removal or stable external temperature control. The integrated refrigeration, temperature controller, reservoir, and circulation pump provide a self-contained solution that can be connected to compatible laboratory and process equipment.

A color TFT display provides access to operating information and temperature-control functions. The Variocool platform also incorporates an electronic level indicator, low-level protection, programmable temperature control, and connectivity options intended to support integration into more complex laboratory and process systems.

Key Specifications

Specification	Details
Manufacturer	Lauda
Model	Variocool VC 2000
Equipment Type	Recirculating chiller / refrigerated circulator
Temperature Range	-20°C to +40°C
Temperature Stability	±0.05 K
Filling Volume	8–15 L
Maximum Flow Rate	28 L/min
Maximum Discharge Pressure	0.9 bar with standard 28 L/min pump
Cooling Capacity	Approx. 2.0 kW at 20°C; capacity decreases at lower temperatures
Pump Connection	G 3/4 in.
Condenser	Air-cooled
Display	Color TFT
Overall Dimensions	17.7 in. W × 21.7 in. D × 25.6 in. H
Electrical Requirements	230 V, 50 Hz
Weight	Approx. 128 lb

Common Applications

The Lauda Variocool VC 2000 can be used wherever laboratory equipment or experimental processes require a continuous supply of temperature-controlled circulating fluid. Common applications include cooling analytical instruments, condensers, jacketed reaction vessels, process equipment, laboratory reactors, and other systems that generate heat during operation.

Recirculating chillers are also frequently incorporated into chemistry, pharmaceutical, biotechnology, materials research, and industrial laboratory workflows where conventional tap-water cooling is undesirable or where more precise control over coolant temperature is required. Closed-loop circulation can reduce water consumption while providing a more controlled cooling source for compatible equipment.

Ideal Laboratory Types

The Variocool VC 2000 is well suited for pharmaceutical and biotechnology research laboratories, chemistry labs, process-development facilities, analytical laboratories, materials-science environments, industrial R&D facilities, quality-control laboratories, and academic research institutions.

Its combination of sub-ambient cooling and external circulation is particularly useful for laboratories operating equipment that requires a dedicated coolant source rather than relying on facility water.

Temperature Control & Stability

Precise temperature control is one of the principal advantages of the Variocool platform. The VC 2000 provides an operating range extending down to -20°C, allowing the system to support applications that require temperatures substantially below ambient conditions.

Temperature stability of approximately ±0.05 K helps maintain consistent coolant conditions during extended experiments and processes. Cooling capacity varies with operating temperature and thermal load, so laboratories should consider both their target temperature and the amount of heat generated by the connected equipment when selecting a recirculating chiller.

For applications approaching the lower end of the VC 2000's operating range, the available cooling capacity will be lower than its rated capacity at warmer fluid temperatures.

Circulation & Pump Performance

The standard Variocool VC 2000 configuration provides a maximum flow rate of approximately 28 L/min with maximum discharge pressure of approximately 0.9 bar. An adjustable bypass allows circulation pressure to be limited when working with pressure-sensitive external equipment.

External circulation capability allows the VC 2000 to transfer conditioned fluid between its internal refrigeration system and compatible laboratory equipment. Actual flow through an installed system will depend on factors such as hose diameter and length, elevation changes, fittings, restrictions, fluid viscosity, and the hydraulic resistance of the connected instrument.

Users should verify the pressure and flow requirements of the equipment being cooled before selecting hoses, fittings, and operating settings.

Refurbishment & Testing

This used Lauda Variocool VC 2000 is refurbished and tested by American Instrument Exchange before shipment. Our technicians inspect the refrigeration, circulation, temperature-control, electrical, and user-interface systems and operate the unit to verify proper performance.

Temperature-controlled equipment is evaluated using appropriate temperature-measurement equipment, and the circulation system is checked for proper pump operation and fluid movement. The reservoir and fluid-contact areas are cleaned and circulating fluid is drained prior to shipment.

If your application has specific operating temperatures or testing requirements, contact American Instrument Exchange before shipment. When practical, our technicians can incorporate customer-requested operating conditions into the final testing process.

A 90-day warranty is included with this refurbished Lauda circulator.

Choosing the Right Recirculating Chiller

When selecting a laboratory recirculating chiller, temperature range alone does not determine whether a unit is suitable for an application. Cooling capacity at the desired operating temperature, pump flow, discharge pressure, reservoir capacity, electrical requirements, and the hydraulic characteristics of the connected equipment should all be considered.

The Variocool VC 2000 is particularly appropriate for applications requiring moderate-capacity cooling combined with relatively high fluid circulation. Laboratories with very large thermal loads, substantially lower temperature requirements, or equipment requiring higher circulation pressure may require a different circulator configuration.

American Instrument Exchange can help compare available used and refurbished circulators based on your target temperature, equipment load, flow requirements, and application.

Related Equipment

American Instrument Exchange stocks a range of laboratory circulators, laboratory water baths, and other temperature-control equipment for research and process applications. Laboratories using recirculating chillers may also require rotary evaporators and extractors, reactors and fermenters, or other refurbished laboratory equipment.

Lauda Variocool VC 2000 Frequently Asked Questions

What is the temperature range of the Lauda Variocool VC 2000?

This VC 2000 is rated for operation from approximately -20°C to +40°C, making it suitable for both below-ambient cooling and controlled-temperature circulation applications.

What is the flow rate of the Lauda VC 2000?

The standard circulation pump provides a maximum flow rate of approximately 28 L/min. Actual flow through connected equipment depends on system resistance, tubing, fittings, fluid properties, and other installation factors.

Can the Variocool VC 2000 cool external laboratory equipment?

Yes. External circulation is one of the primary functions of the VC 2000. Temperature-controlled fluid can be circulated through compatible instruments, condensers, jacketed vessels, reactors, and other laboratory or process equipment.

How much cooling capacity does the VC 2000 provide?

Cooling capacity depends on coolant temperature and operating conditions. The VC 2000 provides approximately 2.0 kW of cooling capacity at 20°C, with available capacity decreasing as the circulating-fluid temperature drops.

Is the Lauda VC 2000 air cooled?

Yes. This VC 2000 uses an air-cooled condenser, so it does not require a separate facility-water connection for condenser cooling. Adequate ventilation around the chiller should be maintained to allow heat generated by the refrigeration system to dissipate.

Does this used Lauda circulator include a warranty?

Yes. This used Lauda Variocool VC 2000 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.