Thermo Scientific TSU300A Ultra-Low Temperature Freezer

Product Code : SKU 2546T FREEZER

Price Match Policy

Shipping

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

Thermo Scientific TSU300A Ultra-Low Temperature Freezer

The Thermo Scientific TSU300A Ultralow Freezer is designed for secure long-term storage of biological samples, vaccines, cell lines, tissues, DNA, RNA, plasma, serum, and other temperature-sensitive materials. Part of Thermo Scientific's TSU Series ultra-low freezers, the TSU300A combines high storage density, energy-efficient operation, and reliable temperature performance for demanding laboratory environments. This refurbished Thermo Scientific TSU300A from American Instrument Exchange provides a cost-effective alternative to new equipment while delivering the sample protection required by biotechnology companies, pharmaceutical manufacturers, research institutions, and clinical laboratories.

Thermo Scientific TSU300A Ultra-Low Temperature Freezer Key Features

Thermo Scientific TSU300A ultra-low temperature freezer
Upright cabinet configuration
28.8 cubic foot storage capacity
Stores up to 600 standard 2-inch cryoboxes
Temperature range from -50°C to -86°C
H-drive hydrocarbon refrigeration technology
Energy-efficient operation
Microprocessor temperature control system
Touchscreen user interface
Multiple insulated inner doors
Audible and visual alarm system
High-density sample storage capacity
Refurbished and tested by American Instrument Exchange
90-day warranty included from American Instrument Exchange

Thermo Scientific TSU300A Ultra-Low Temperature Freezer Key Overview

The Thermo Scientific TSU300A is engineered to provide dependable ultra-low temperature storage while reducing energy consumption and operating costs. Utilizing Thermo Scientific's H-drive hydrocarbon refrigeration technology, the TSU300A achieves stable storage temperatures down to -86°C while offering improved energy efficiency compared to many traditional cascade refrigeration systems. The large-capacity upright design accommodates up to 600 standard cryoboxes, making it suitable for laboratories managing extensive sample inventories. Multiple insulated inner doors help minimize temperature fluctuations during sample access, while advanced controls and alarm systems provide continuous monitoring of freezer performance.

Common Applications for the Thermo Scientific TSU300A Ultra-Low Temperature Freezer

The TSU300A is commonly used for long-term storage of cell cultures, stem cells, DNA samples, RNA samples, plasma, serum, tissue specimens, microbial cultures, vaccines, pharmaceutical materials, and research reagents. Ultra-low freezers are critical components of biobanking operations, pharmaceutical development programs, biotechnology research, clinical studies, and laboratory quality control environments where preservation of sample integrity is essential.

Ideal Lab Types for the Thermo Scientific TSU300A Ultra-Low Temperature Freezer

This ultra-low freezer is well suited for biotechnology companies, pharmaceutical manufacturers, university research facilities, hospital research centers, clinical laboratories, government research organizations, and biorepositories. Laboratories utilizing biosafety cabinets, centrifuges, incubators, and laboratory refrigerators often depend on ultra-low freezers such as the TSU300A to support sample preservation and research workflows.

Thermo Scientific TSU300A Ultra-Low Temperature Freezer Key Specifications

Specification	Details
Manufacturer	Thermo Scientific
Model	TSU300A
Equipment Type	Ultra-Low Temperature Freezer
Capacity	28.8 cu. ft. (816 liters)
Cryobox Capacity	Up to 600 standard 2-inch boxes
Temperature Range	-50°C to -86°C
Refrigeration System	H-drive Hydrocarbon Refrigeration
Cabinet Style	Upright
Control System	Microprocessor Controlled
Display	Touchscreen User Interface
Interior Doors	Multiple Insulated Inner Doors
Exterior Dimensions	Approx. 38.0" W x 36.1" D x 78.0" H
Interior Dimensions	Approx. 28.1" W x 27.0" D x 58.7" H
Electrical Requirements	115V, 60 Hz
Application	Long-Term Biological Sample Storage

Specifications compiled from Thermo Scientific manufacturer literature, distributor technical references, and American Instrument Exchange product information.

Refurbishment and Testing Process

At American Instrument Exchange, each refurbished ultra-low freezer is inspected and evaluated by our technicians prior to shipment. Testing procedures may include refrigeration performance verification, temperature pull-down testing, temperature stability assessment, controller functionality testing, alarm verification, door gasket inspection, and general operational testing. Components showing excessive wear are addressed as needed to help ensure reliable performance. Final cleaning and inspection are completed before packaging and shipment.

Shipping and Installation Considerations

The Thermo Scientific TSU300A requires adequate ventilation clearance and a dedicated electrical circuit to support optimal freezer performance. Buyers should verify facility access, doorway clearances, elevator dimensions, and final installation requirements prior to delivery. Ultra-low freezers should be transported upright whenever possible and allowed to stabilize before startup following shipment. Proper installation and routine preventative maintenance can help maximize freezer performance and service life.

Related Laboratory Equipment

Laboratories purchasing ultra-low freezers often also require laboratory refrigerators, freezers, biosafety cabinets, centrifuges, and incubators. American Instrument Exchange offers a wide selection of refurbished laboratory equipment to support cold storage, sample preparation, and research workflows.

Thermo Scientific TSU300A Ultra-Low Temperature Freezer Frequently Asked Questions

How much storage capacity does the TSU300A provide?

The TSU300A offers approximately 28.8 cubic feet (816 liters) of storage capacity and can accommodate up to 600 standard 2-inch cryoboxes.

What temperature range does the TSU300A support?

The freezer is designed to operate between -50°C and -86°C, making it suitable for long-term preservation of biological materials and research samples.

What is H-drive refrigeration technology?

H-drive technology utilizes environmentally friendly hydrocarbon refrigerants and high-efficiency compressor design to provide reliable ultra-low temperature performance while reducing energy consumption.

Has this freezer been tested by American Instrument Exchange?

Yes. Each refurbished TSU300A undergoes inspection and operational testing by American Instrument Exchange technicians prior to shipment.

What warranty is included?

This refurbished Thermo Scientific TSU300A Ultra-Low Temperature Freezer includes a 90-day warranty from American Instrument Exchange.

Testing Procedures for Used and Refurbished Ultralow Freezers
Ensure -80°C Stability and Critical Sample Protection

Used and refurbished ultralow freezers from American Instrument Exchange are rigorously tested to ensure reliable long-term storage at temperatures as low as -80°C. Each unit undergoes a detailed inspection, full system evaluation, and extended runtime testing to meet the high standards required by research, clinical, and biorepository environments.

Why Testing Used Ultralow Freezers Is Essential

Before an ultralow freezer is placed back into service, it must be carefully tested for:
• Temperature stability and uniformity at ultralow levels (e.g., -70°C to -86°C)
• Cascade refrigeration system functionality and compressor health
• Seal and insulation effectiveness to prevent thermal loss
• Electrical safety, alarm functionality, and system compliance

Thorough testing helps prevent temperature excursions and equipment failure—crucial for protecting sensitive materials such as biological samples, vaccines, enzymes, and research specimens.
Our structured ULT testing protocol ensures each refurbished unit delivers dependable performance and long-term reliability.

Key Testing Procedures for Refurbished and Used Ultralow Freezers

1. Initial Visual Inspection

• Inspect external cabinet, hinges, and door gaskets for wear, corrosion, or damage
• Check power cords, plugs, and control interfaces for signs of wear or tampering
• Verify that internal racks, shelving, and chamber components are intact and operational

2. Functional Startup and Control Testing

• Power on the unit and confirm successful initialization of digital displays and alarm systems
• Test control panels, keypad responsiveness, and user-setpoint functionality
• Verify that door seals close tightly and form a secure barrier

3. Temperature and -80°C Stability Testing

• Test and evaluate internal temperature sensors thermometers/probes
• Monitor temperature performance at multiple chamber points over extended runtimes
• Confirm uniformity and stability at key setpoints, including -70°C, -80°C, and -86°C

4. Refrigeration System and Cascade Compressor Evaluation

• Test dual-stage (cascade) compressor function, startup times, and cycling behavior
• Evaluate evaporator coils, heat exchangers, and vacuum insulation panels for performance and integrity
• Check for refrigerant leaks, low-pressure faults, and abnormal compressor noise

5. Alarm and Safety System Verification

• Test high/low temperature alarms, power failure alerts, and battery backup systems (if equipped)
• Verify lockout controls, alarm delay settings, and door-open indicators

6. Final Quality Assurance and Documentation

• Run a continuous multi-day test cycle at -80°C to confirm sustained performance
• Document temperature logs, controller accuracy, and compressor behavior
• Complete a detailed service report

Dependable Performance from American Instrument Exchange

All refurbished ultralow freezers from American Instrument Exchange are tested to exacting standards for performance, safety, and reliability. With our rigorous inspection and testing procedures, you can trust your ULT freezer to deliver consistent -80°C storage from day one—ideal for research, clinical, pharmaceutical, and biobanking applications.

Repair and Refurbishment Protocol for Used Ultralow Freezers
-80°C Storage Performance from American Instrument Exchange

At American Instrument Exchange, every used ultralow temperature freezer (ULT freezer) undergoes a rigorous, multi-step refurbishment protocol designed to restore reliable -80°C performance. Whether upright, chest-style, or undercounter, our refurbished ULT freezers are tested and restored to deliver the cold storage precision required for biological samples, vaccines, enzymes, and other temperature-sensitive materials.

Why Choose a Refurbished Ultralow Freezer from American Instrument Exchange?

• Fully tested for -80°C cold storage stability and compressor performance
• Backed by a warranty
• A cost-effective alternative to expensive new ULT units
• Environmentally responsible through equipment reuse and waste reduction
• Serviced by experienced technicians specializing in laboratory-grade refrigeration

Step-by-Step Ultralow Freezer Refurbishment Protocol

Every ultralow freezer sold by American Instrument Exchange is carefully evaluated and restored through the following process:

1. Initial Intake & Inspection

• Exterior inspection for dents, corrosion, or physical damage
• Evaluation of door seals, hinges, and internal chamber components
• Documentation of missing parts or components requiring repair

2. Cleaning and Decontamination

• Comprehensive interior and exterior cleaning using non-abrasive cleaners
• Removal of dust, frost buildup, and residual contaminants
• Decontamination of all internal surfaces and removable parts like shelves and drawers

3. Mechanical and Electrical Repairs

• Replacement or repair of worn or damaged components (door latches, hinges, gaskets, etc.)
• Inspection and repair of control boards, displays, sensors, and switches
• Electrical system evaluation, including fuses, wiring, relays, and connectors

4. Ultralow Refrigeration System Assessment

• Testing of dual-stage compressors and cascade cooling system
• Evaluation of heat exchangers, evaporator coils, and vacuum insulation panels
• Inspection for refrigerant leaks, low pressure, or signs of compressor fatigue
• Verification of thermal insulation integrity

5. Temperature and Performance Testing

• Testing of internal temperature sensors and controllers
• Multi-point testing to verify chamber temperature uniformity at -80°C
• Long-duration, multi-day operational testing to ensure sustained ultralow performance

6. Safety and Compliance Checks

• Electrical safety testing and grounding verification
• Alarm function tests for high/low temperature alerts and power failure warnings

7. Final Quality Control and Documentation

• Multi-day runtime validation at -80°C
• Recording of temperature logs, compressor cycle data, and performance benchmarks
• Final inspection and service/testing report completed

Trust the Experts at American Instrument Exchange

With over 50 years in the lab equipment industry, American Instrument Exchange is your trusted source for refurbished ultralow freezers. Our certified refurbishment protocol ensures each ULT freezer delivers the precision, performance, and reliability your lab needs—at a fraction of the cost of new 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.