Skip to content
Now offering lab equipment depot repair services - Click here for details
Now offering lab equipment depot repair services - Click here for details

Thermo Fiberlite F20-12x50 LEX Rotor

by Thermo
SKU 1392Q CENTRI

FULLY TESTED & WARRANTIED*

Size: $0.00
Color: 08-18-2023

Shipping

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

Contact Us

Call 978-521-2221
to request information & pricing for item 1392Q CENTRI

90-Day Warranty

Thermo Sorvall Fiberlite F20-12x50 LEX Fixed Angle Rotor with Auto-Lock

Thermo Fiberlite 20-12x50 LEX Rotors maximize centrifuge performance with versatility, speed and a robust, corrosion-free design. Large metal centrifuge rotors often present a unique lifting hazard in the laboratory due to their weight and awkward shape.

Lightweight Fiberlite rotors—up to 60% less weight than metallic rotors —facilitate a safer work environment and minimize risk of damage to centrifugation equipment as a result of these ergonomic improvements. Additionally, these lightweight properties result in faster acceleration/deceleration rates for shorter run times.

Specifications

  • Volume: 600 mL
  • Max speed: 20,000 rpm
  • Max RCF: 51,428 x g
  • Compatibility: Sorvall LYNX 6000 and 4000
  • 90-day warranty

Features

Traditionally, the primary cause of rotor failure is damage due to moisture, chemicals or alkaline solutions that weaken the metal's integrity. Carbon fiber composite rotors are corrosion-resistant, eliminating this ever-present hazard.  They are safe to use with most mild laboratory detergents and solutions, providing easy rotor care and maintenance.

Substantial load or stress, as a result of high rotational speeds and repeat cycles, can also threaten metal rotor structure by causing it to stretch and change in size, limiting rotor life or leading to failure. Thermo Scientific Fiberlite rotors are fatigue-resistant, mitigating this threat.

The next generation of high capacity Fiberlite rotors, the Fiberlite LEX rotor series, further advances the current carbon fiber design, combining even lower mass with low kinetic energy to deliver superior ergonomics with outstanding performance and safety.

Fiberlite LEX rotors take the lightweight design of carbon fiber to a whole new level; these rotors are the lightest of their kind, further improving ergonomics and ease of handling.

Auto-Lock rotor exchange. Secure, push-button rotor exchange in as little as 3 seconds. Improved safety and confidence that the rotor is automatically and securely locked and will not loosen during a run. Flexibility to quickly change rotors and applications, matching the needs of your laboratory—today and in the future.

Trouble-free rotor installation and removal that requires no tools change rotors; and the rotor locks itself to the centrifuge, eliminating the need for hand-tightening.

Auto-ID instant rotor identification. Immediate identification of a rotor when secured in the centrifuge chamber, with rotor specifications automatically loaded into the centrifuge parameters. Shortens run set-up time by eliminating the need to find and set rotor codes. Eliminates over-speed risk, reduces error messages, and improves centrifuge, sample and operator safety.

Speed handle on rotor lids. Accelerates and simplifies rotor lid tightening, ensuring lid is properly attached and is easier and safer for lifting and carrying rotors, further enhanced with the lightweight design.

Testing

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.

F20-12x50 LEX - Additional Specifications

Capacity 12 x 50 mL
Max speed 20,000 rpm
Max RCF 51,428 x g
Compatibility Sorvall LYNX 6000 and 4000 Superspeed Centrifuge

Pictures

The photos above are representative. Please bear in mind that the equipment shown is currently in storage in our warehouse. 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 testing and cleaning.

Call 978-521-2221 or email us today for pricing and of the Thermo Sorvall Fiberlite F20-12x50 LEX Fixed Angle Rotor.

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. While we may not be able to test for specific analytical applications we do our best to simulate the conditions under which the equipment will be used in your lab. If you have particular testing requirements please let us know and we’ll work with you to make sure these are addressed during testing. 

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. In many cases we can offer inside delivery. Customers are also welcome to make pick-up arrangements using their own preferred carrier. 

All shipments are FOB Haverhill, MA. American Instrument Exchange will take reasonable steps to protect the equipment during shipment and the equipment will be fully insured. The customer will be charged for all shipping and handling charges, and fees incurred in the process of delivering the order.  

For local customers in and around New England we can offer shipping and delivery using a local moving company trained by our staff to handle and deliver lab equipment. Our local movers can provide either standard dock-to-dock delivery or bring the equipment into your lab and set it in place. 

Prior to signing the POD (Proof of Delivery), you are responsible for inspecting the goods for any damage.  You MUST note any damage on the POD prior to letting the driver leave.  This is to protect you, the receiver of the goods in the unlikely event of any damage.  Once you sign the POD free and clear from damage, the goods are then deemed delivered in good order and no further claims would be applicable.  This is the standard for all transportation so we want to protect you, our valued client.

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 by American Instrument or a technician hired by/vetted by American Instrument Exchange’s during the warranty period. The customer will be responsible for proper packaging of the equipment and all included accessories. 

Customers who cancel orders after refurbishing has begun or after delivery where there are no equipment performance issues will be subject to a cancellation and restocking fee of between 20% and 40% and responsible for the full total of the  shipping & handling costs for both the delivery and the return of the equipment. 

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.