Thermo IEC CL31R multispeed

Brand : Thermo

Product Code : SKU 1286E CENTRI

Quantity

Price Match Policy

Shipping

All products ship from our 30,000 sq. ft. Haverhill, MA warehouse

Thermo IEC CL31R Refrigerated Tabletop Centrifuge

The Thermo IEC CL31R Refrigerated Tabletop Centrifuge is an update of the classic IEC tabletop models. With a sleek design and easy to operate front-facing control panel, the IEC CL31R is both a versatile and aesthetically attractive option for your general centrifugation needs.

Specifications

Tabletop refrigerated centrifuge, range from -9°C to 40°C
Maximum Capacity: 4 x 280mL
Maximum speed: 14,600 rpm
90-day warranty

Click Here to see the Thermo IEC CL31R centrifuge on the American Instrument Exchange YouTube channel.

Features

Thermo’s AUTO-LOCK rotor change system gives users the ability to quickly and easily swap out rotors. The IEC 31R is compatible with an extensive set of nine rotors, including the T41 and S41 swinging bucket models. (Sold separately – call for availability.)

Users can run 16x50mL, 30x15mL, and 60x1.5mL, among other configurations and volumes, addressing virtually every protocol typical in biology, cell culture, and research laboratories. The Thermo IEC CL31R has a brushless induction motor requires minimal maintenance under normal operating conditions. The microprocessor control panel is simple and intuitive and allows users single keystroke access to the programs they use on a daily basis.

Thermo IEC CL31R - Additional Specifications

Speed Range	500 to 14,600 rpm
Set Time	30 seconds to 99 minutes
Dimensions	22.4”W x 14.6”H x 23.6”D
Electrical requirements (call or email to confirm)	120V, 50/60Hz
Max Capacity	4 x 280mL
Max RCF	23,113 x g

Testing

Most of our equipment is used and reconditioned. Our technicians test the performance of all centrifuges and make sure the rotating assembly is properly balanced; the bearings, seals and gaskets on the spindle assembly are in good shape; and the controls work properly.

If the centrifuge is refrigerated we also test to make sure that the machine reaches and hold temperature properly. All tolerances are measured and the exterior and interior of all units are fully cleaned. If the unit is being purchased with a rotor we test the rotor/centrifuge combination together.

Our technicians inspect all rotors, including any buckets, gaskets and overspeed disks. Fixed angle rotors are closely inspected for body integrity; swinging bucket rotors supplied with buckets are checked for proper weight distribution. When possible we run each rotor in a compatible centrifuge to make sure the rotor spins properly.

Pictures

The photos above are representative. Please bear in mind that the equipment shown is currently in storage in our warehouse and that in addition to testing each machine we will clean all the equipment thoroughly prior to shipment.

We often have multiple units of each model in stock and sometimes we're unable to feature photos of every single unit. At your request, we can provide photos of the equipment in your order after it has been tested and cleaned.

Please call 978-521-2221 or email us today for pricing and additional information.

Testing Procedures for Used and Refurbished Laboratory Centrifuges

Ensure Quality, Accuracy, and Compliance Before Deployment

Used and refurbished laboratory centrifuges from American Instrument Exchange undergo testing procedures to ensure they meet the performance, safety, and compliance standards required in modern laboratories.

Why Testing Used Laboratory Centrifuges Is Essential

Before a centrifuge is reintroduced into a lab environment, it must be tested for:

Mechanical integrity
Rotor balance and speed accuracy
Safety system functionality
Electrical compliance

Proper testing helps extend equipment lifespan, reduce downtime, and ensure safety in high-stakes lab environments such as clinical diagnostics, biotechnology, and research applications.

Our structured testing protocol for used and refurbished centrifuges ensures equipment safety, accuracy, and longevity.

Key Testing Procedures for Refurbished and Used Centrifuges

1. Initial Visual Inspection

Check for signs of wear, corrosion, or damage to housing, lid, and control panels
Inspect power cords, plugs, and connectors for fraying or exposed wiring
Confirm that the rotor and accessories are compatible and undamaged

2. Functional Testing

Power up the centrifuge and confirm successful boot-up of digital or analog displays
Test lid lock and emergency stop mechanisms
Run initial cycles at various speeds to check for abnormal noise or vibration

3. Rotor and Speed Verification

Test all programmable speed settings to confirm consistent acceleration and deceleration
Monitor temperature, vibration, and RPM consistency throughout the cycle
Balance testing ensures smooth operation and prevents wear on internal components

4. Electrical Safety and Grounding Tests

Verify that all electrical components are properly grounded and shielded

5. Temperature Control (if applicable)

For refrigerated centrifuges, test cooling function to ensure temperature stability within set ranges
Check refrigerant levels and inspect for compressor noise or failure

6. Final Quality Assurance Checklist

Conduct a full run-through using the user interface
Document all test results

Repair and Refurbishment Protocol for Used Laboratory Centrifuges

Certified Quality from American Instrument Exchange

At American Instrument Exchange, we follow a meticulous repair and refurbishment protocol to ensure that every used laboratory centrifuge we sell. We strive for reliable performance and long-term durability—providing labs with exceptional value on high-quality pre-owned centrifuges.

Why Choose a Refurbished Centrifuge from American Instrument Exchange?

Fully tested
Backed by warranty and performance guarantee
Cost-effective alternative to new lab equipment
Environmentally responsible through equipment reuse
Supported by expert technicians with decades of experience

Step-by-Step Refurbishment Protocol

Every used centrifuge at American Instrument Exchange goes through the following comprehensive repair and refurbishment process:

1. Initial Intake & Inspection

Our technicians perform a complete visual and mechanical inspection
Evaluation of hinges, seals, gaskets, and electrical components
Any physical damage, missing parts, or wear is documented for repair

2. Cleaning and decontamination

Full internal and external cleaning using non-abrasive, disinfectant-safe products
Biological or chemical residue is decontaminated/cleaned

3. Mechanical & Electrical Repairs

Damaged or worn parts (e.g., drive motors, lid latches, rotor buckets) are replaced or repaired
Electrical components, sensors, and fuses are tested and replaced as needed
Wiring is inspected for integrity and safety per industry standards

4. Rotor & Accessory Evaluation

All rotors, buckets, and adapters are inspected for cracks, corrosion, and balance
Non-conforming components are replaced with OEM or equivalent alternatives

5. Performance Testing

Rotor speed (RPM), acceleration, and deceleration are verified
Refrigerated centrifuges undergo temperature stability testing across set ranges

6. Safety System Verification

Lid lock and interlock systems are tested for proper function
Emergency stop and imbalance detection systems are verified
Electrical safety and grounding tests are conducted

Trust the Experts at American Instrument Exchange

With over 50 years of experience in the industry, American Instrument Exchange is a trusted name for refurbished lab equipment. Our centrifuge refurbishment protocol reflects our commitment to quality, safety, and customer satisfaction.

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.