Description
Thermo Scientific Megafuge ST4R Plus-MD Centrifuge
The Thermo Megafuge ST4R Plus-MD Centrifuge Series provides faster processing of more samples with a high capacity-to-footprint ratio and simple programming interface, plus the flexibility to run most tubes and bottles on one centrifuge.
The ST4R Plus series centrifuges come standard with an easy-to-use keypad and high contrast LCD display. This high-capacity and versatile unit offers consistent performance and is ideal for routine applications. Quickly and securely swap between 13 unique rotor options (available from Thermo Scientific) with the tool-less Auto-Lock rotor exchange.
Specifications
- Catalog number 75009519
- Max capacity: 4 x 1000 mL (swinging bucket)
- Temperature range: -10°C to +40°C
- Sold without rotor
- 90-day warranty
ST4R Plus-MD – Features
Easy to Use:
Intuitive controls simplify operation and provide detailed information on a wide range of operating parameters and processing status for optimal performance.
Modern industrial design supports continuous improvement in rotor loading ergonomics, user safety and current needed certifications
Motorized lid latch enables one finger downward motion for easiest closing and locking of centrifuge lid, even on tall benches.
Thermo Scientific Auto-Lock III Rotor System:
Secure locking system allows easy push-button installation and exchange of rotors.
System saves time when switching between applications.
Easy access to rotor chamber offers quick cleaning, a healthier working environment and longer unit life.
Thermo Scientific SMARTSpin Technology:
Advanced rotor management system maximizes acceleration, braking and residual load imbalance for each rotor and bucket option:
Technology optimizes safety and improves separations.
Space-Saving Design:
Compact dimensions optimize work area and ergonomic height and curved design ensure easy sample loading and unloading and easy cleaning.
Energy Efficient:
System offers up to 40% energy consumption savings on industry standard protocols, such as standard blood separation or conical tubes processing.
Testing
This Thermo Megafuge ST4R Plus-MD 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.
Megafuge ST4R Plus-MD – Additional Specifications
| Exterior dimensions | 29.4”W x 27.2”D x 14.2”H |
| Capacity (rotors not included) | 196 x 5/7 mL Blood Tubes, 148 x 9/10 mL Blood Tubes, 96 x 15 mL Conical Tubes, 40 x 50 mL Conical Tubes, 6 Microplates, 4 x 1000 mL BioBottles |
| Max RCF | 25,830 x g Fixed Angle (with 30 x 2 mL Rotor), 5,590 x g Swing-Out (with BIOShield 1000A Rotor) |
| Temperature range | -10°C to +40°C |
| Profiles (Acceleration/Braking) | Choices of 9 Accel/10 Decel Rates |
| Program storage | Up to 6 Programs via LCD User Interface buttons |
| Electrical requirements | 120 V, 60 Hz, 12A |
| Weight | 264.5 lbs |
Pictures
The photos above represent our equipment, which is currently stored in our warehouse. Since we often stock multiple units of each model, we may not feature photos of every unit. However, if you request, we will provide photos of your specific equipment after we test and clean it.
For inquiries about the Thermo Scientific Megafuge ST4R Plus-MD Centrifuge, call us at 978-521-2221 or fill out the form on this page.
Thermo Scientific Megafuge ST4R Plus – FAQs
What industries commonly use the Megafuge ST4R Plus?
This centrifuge is widely used in clinical and hospital laboratories, biotechnology and pharmaceutical labs, academic research institutions, environmental and industrial testing labs, and any other labs looking for a dependable high-throughput refrigerated centrifuge. Its versatility makes it a go-to general-purpose centrifuge platform.
What are the most common laboratory applications for the Thermo Scientific Megafuge ST4R Plus?
The Thermo Scientific Megafuge ST4R Plus is designed as a versatile, general-purpose centrifuge that supports a wide range of routine and specialized laboratory workflows. Its high capacity, rotor flexibility, and refrigeration make it suitable for applications such as:
· Clinical diagnostics: Separation of whole blood into plasma or serum, processing of urine samples, and preparation of clinical specimens
· Cell culture workflows: Harvesting cells, pelleting bacteria or yeast, and clarifying cell lysates
· Molecular biology: DNA/RNA extraction, PCR sample prep, and nucleic acid purification
· Biochemistry and proteomics: Protein isolation, enzyme preparation, and sample fractionation
· Pharmaceutical and biotech research: Drug development workflows, sample clarification, and quality control testing
· Environmental and industrial labs: Processing water samples, particulates, and chemical suspensions
Thanks to its temperature control (-10°C to +40°C) and compatibility with both high-speed fixed-angle and large-capacity swinging-bucket rotors, the Megafuge ST4R Plus can handle everything from temperature-sensitive biomolecules to high-throughput clinical batches—making it an ideal all-in-one centrifuge for busy labs.
What types of rotors and tubes are compatible?
The Megafuge ST4R Plus supports over a dozen rotor options, including:
· Swinging-bucket rotors (e.g., TX-1000 for large volumes)
· Fixed-angle rotors for high-speed micro applications
· Specialized rotors for blood tubes, conical tubes, microplates, and syringes
It can process up to 76 blood tubes per run and up to 16 x 50 mL conical tubes, making it a great option for labs looking for larger capacity centrifuges without dedicating the funds or floor space to a floor model unit like the Thermo Lynx 6000.
How easy is it the Thermo Megafuge ST4R to operate?
This centrifuge is designed for intuitive, routine use:
· Simple push-button interface with LCD display
· Stores up to 6 programmable runs
· Auto-Lock rotor system enables tool-free rotor changes
· Motorized lid latch for easy one-handed operation
These features reduce training time and improve lab efficiency.
How else does the Megafuge ST4R Plus improve lab productivity?
The system is engineered for high throughput and efficiency high capacity-to-footprint ratio, fast acceleration/deceleration with multiple profiles, and the ability to run diverse applications on a single platform. It can also be used with multiple rotors for multiple tube sizes. This reduces the need for multiple centrifuges and speeds up workflows, as well as saving bench space and money.
Is a used or refurbished Megafuge ST4R Plus reliable?
Yes—when purchased from a trusted supplier like American Instrument Exchange, refurbished units are fully tested and inspected, professionally cleaned and calibrated, and verified for performance and safety. Because Thermo Scientific centrifuges are built for durability, refurbished systems can deliver years of reliable service at a significantly lower cost.
What are the advantages of buying a refurbished centrifuge?
Purchasing a refurbished Megafuge ST4R Plus offers:
· Significant cost savings vs. new units
· Faster availability compared to factory lead times
· Sustainable reuse of high-quality lab equipment
· Access to premium features at a reduced budget
This makes it ideal for growing labs, startups, and budget-conscious facilities. You can read more about the advantages of buying refurbished equipment on our blog.
What maintenance is required?
Routine maintenance for most Thermo centrifuges is straightforward and includes:
· Regular cleaning of the rotor chamber
· Inspection of rotors and seals
· Periodic calibration and servicing
The design allows easy access for cleaning, helping maintain performance and extend lifespan. If you’re looking for regular preventative maintenance and/or repair services. For the Thermo Megafuge ST4R Plus, American Instrument Exchange offers both PM and repairs. Contact us for more information today!
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