The Thermo Scientific TSX2305SA High-Performance Laboratory Refrigerator is a laboratory-grade solid door refrigerator engineered for biotechnology laboratories, pharmaceutical manufacturers, hospitals, clinical laboratories, universities, and research facilities requiring dependable refrigerated storage with exceptional energy efficiency and temperature stability. Offering 23 cubic feet (650 L) of storage capacity and an operating temperature range of 3°C to 7°C, the TSX2305SA provides secure storage for biological samples, pharmaceuticals, reagents, vaccines, and other temperature-sensitive laboratory materials.
Part of the Thermo Scientific TSX Series, the TSX2305SA incorporates V-drive variable-speed compressor technology, adaptive control software, forced-air circulation, automatic heat-free defrost, and a microprocessor controller to deliver excellent temperature uniformity while significantly reducing energy consumption. The insulated solid door minimizes temperature fluctuations caused by ambient conditions and frequent laboratory activity, making the TSX2305SA an excellent choice for laboratories where maximum sample protection is the highest priority.
TSX Series High-Performance Laboratory Refrigerator
23 cu. ft. (650 L) capacity
Temperature range: 3°C to 7°C
Solid insulated swing door
V-drive variable-speed compressor technology
Microprocessor controller with eye-level information center
Positive forced-air circulation
Heat-free automatic defrost
High and low temperature alarms
Door ajar alarm
Power failure alarm
Low battery alarm
Battery backup
Remote alarm contacts
Keyed security lock
Adjustable epoxy-coated wire shelves
LED interior lighting
ENERGY STAR® certified
Smart-Vue™ compatible
R290 natural refrigerant
Quiet operation
Refurbished and performance tested by American Instrument Exchange
90-day warranty included.
Overview
The Thermo Scientific TSX2305SA was designed to provide dependable laboratory refrigeration while minimizing operating costs and maximizing sample protection. Unlike traditional fixed-speed refrigeration systems, Thermo Scientific's V-drive technology automatically adjusts compressor speed to match cooling demand, maintaining stable temperatures while reducing electrical consumption and compressor wear.
The solid insulated door improves thermal performance by reducing heat gain from ambient light and room conditions while limiting temperature fluctuations during routine laboratory operation. Combined with forced-air circulation and adaptive control software, the TSX2305SA provides outstanding temperature uniformity throughout the storage chamber.
Common Applications
The TSX2305SA is commonly used for storing biological specimens, vaccines, pharmaceuticals, laboratory reagents, antibodies, enzymes, proteins, microbiology media, diagnostic kits, calibration standards, quality-control materials, and other temperature-sensitive laboratory supplies requiring storage between 3°C and 7°C.
Ideal Laboratory Types
Biotechnology laboratories
Pharmaceutical manufacturers
Hospital laboratories
Clinical laboratories
Academic research laboratories
Public health laboratories
Molecular biology laboratories
Quality assurance laboratories
Why Choose the Thermo Scientific TSX2305SA?
The TSX2305SA combines industry-leading energy efficiency with exceptional sample protection. V-drive compressor technology, adaptive refrigeration control, positive forced-air circulation, and a solid insulated door work together to maintain excellent temperature stability while reducing operating costs, laboratory noise, and HVAC demand. It is an ideal solution for laboratories that prioritize reliable cold storage over product visibility.
V-drive variable-speed compressor with forced-air circulation
Temperature Control
Microprocessor controller with eye-level information center
Monitoring Features
High/low temperature alarms, door ajar alarm, power failure alarm, low battery alarm, remote alarm contacts
Refrigerant
R290 natural refrigerant
Weight
Approximately 361 lbs.
Shipping Weight
Approximately 426 lbs.
Certification
ENERGY STAR® Certified
Warranty
90-Day Warranty from American Instrument Exchange
Specifications compiled from Thermo Scientific manufacturer literature and American Instrument Exchange product information.
Refurbishment & Testing Process
Every Thermo Scientific TSX2305SA received by American Instrument Exchange undergoes a comprehensive inspection before shipment. Our technicians verify cabinet temperature using calibrated monitoring equipment, inspect the V-drive refrigeration system, microprocessor controller, alarm functions, battery backup, shelving, door gasket, lighting, and overall cabinet condition. Each refrigerator is thoroughly cleaned, temperature tested, and verified for dependable laboratory operation before shipment.
The TSX2305SA ships by freight from American Instrument Exchange. Before installation, verify adequate electrical service and provide sufficient ventilation around the cabinet. Allow the refrigerator to stabilize at its operating temperature before loading valuable laboratory materials. Organizing samples to minimize door-open time will further improve temperature recovery and maximize sample protection.
Frequently Asked Questions
What is the difference between the TSX2305SA and TSX2305GA?
The TSX2305SA features a solid insulated door for maximum temperature stability and energy efficiency, while the TSX2305GA uses a glass door for improved inventory visibility. Both models share the same TSX refrigeration platform and V-drive compressor technology.
What temperature does the TSX2305SA maintain?
The TSX2305SA is designed to operate between 3°C and 7°C, with a factory default setpoint of 5°C, making it ideal for laboratory-grade refrigerated storage.
Is the TSX2305SA ENERGY STAR certified?
Yes. The TSX2305SA is ENERGY STAR certified and utilizes Thermo Scientific's V-drive technology and R290 natural refrigerant to reduce energy consumption while maintaining excellent temperature performance.
How is the refrigerator tested before shipment?
Every refurbished Thermo Scientific TSX2305SA is inspected and temperature tested by American Instrument Exchange technicians. Refrigeration performance, controller operation, alarm systems, door seals, shelving, and overall cabinet functionality are verified prior to shipment.
CLICK HEREto see the Thermo Scientific TSX2305SA laboratory refrigerator on our YouTube channel
Testing Procedures for Used and Refurbished Laboratory Refrigerators Ensure Temperature Stability and Cold Storage Accuracy
Used and refurbished laboratory refrigerators from American Instrument Exchange are thoroughly tested to ensure reliable cold storage performance, temperature accuracy, and compliance with laboratory safety and storage standards. Each unit undergoes a detailed inspection and functional verification to meet the requirements of clinical, pharmaceutical, research, and industrial labs.
Why Testing Used Laboratory Refrigerators Is Essential
Before a laboratory refrigerator is reintroduced into any laboratory setting, it must be carefully tested for:
• Temperature uniformity and stability
• Cooling system integrity and compressor function
• Door seal performance and insulation effectiveness
• Electrical safety and compliance with lab standards
Thorough testing minimizes the risk of temperature excursions, product loss, and system failures—especially critical for storing reagents, vaccines, biological samples, pharmaceuticals, and temperature-sensitive materials.
Our structured testing protocol ensures refurbished lab refrigerators deliver consistent, dependable performance across all makes and models.
Key Testing Procedures for Refurbished and Used Laboratory Refrigerators
1. Initial Visual Inspection
• Check exterior surfaces, hinges, and door gaskets for wear, corrosion, or damage
• Inspect power cords, plugs, and control panels for fraying or visible defects
• Verify that shelves, racks, and internal compartments are present and functional
2. Functional Testing
• Power on the refrigerator and verify that display screens, alarms, and controls function properly
• Test door latches and sealing mechanisms to ensure secure closure and insulation
• Run preliminary temperature cycles to observe startup behavior and cooling response
3. Temperature and Stability Testing
• Test internal temperature sensors and controllers using thermometers/probes
• Monitor temperature at multiple points within the chamber over an extended period
• Verify accuracy across user-defined setpoints (e.g., +4°C, +2°C to +8°C range)
4. Cooling System and Compressor Evaluation
• Test compressor startup, cycling, and operating noise levels
• Inspect condenser coils and fans for proper function and cleanliness
• Check refrigerant pressure (if applicable) and confirm there are no leaks or system inefficiencies
5. Electrical Safety and Compliance Checks
• Ensure all internal and external electrical components are properly grounded
• Perform insulation resistance and leakage current tests 6. Final Quality Assurance Checklist
• Run full operational tests over a 24-hour period
• Document temperature logs, control responsiveness, and system performance
• Complete a detailed service report
All refurbished laboratory refrigerators from American Instrument Exchange are backed by our rigorous testing standards and quality commitment. From vaccine storage to reagent preservation, you can count on consistent cold storage performance from day one.
Repair and Refurbishment Protocol for Used Laboratory Refrigerators Cold Storage Performance from American Instrument Exchange
At American Instrument Exchange, every used laboratory refrigerator we offer is subjected to a comprehensive repair and refurbishment protocol. Whether it’s a general-purpose lab refrigerator, pharmaceutical-grade unit, or undercounter model, our goal is to restore each system to peak performance—ensuring consistent temperature control and reliable to laboratory storage standards.
Why Choose a Refurbished Laboratory Refrigerator from American Instrument Exchange?
• Fully tested for cold storage accuracy and operational safety
• Backed by a warranty
• Cost-effective alternative to new refrigeration equipment
• Sustainably refurbished to reduce environmental impact
• Serviced by expert technicians with decades of laboratory equipment experience
Step-by-Step Refurbishment Protocol
Every laboratory refrigerator from American Instrument Exchange follows a detailed, multi-stage process to ensure top-tier performance and reliability:
1. Initial Intake & Inspection
• Visual inspection for dents, corrosion, or structural damage
• Mechanical check of door hinges, gaskets, seals, and internal components
• Documentation of missing parts or areas requiring repair or replacement
2. Cleaning and Decontamination
• Internal and external cleaning using non-abrasive, lab-safe cleaners
• Decontamination/cleaning of all surfaces to remove biological or chemical residues
• Thorough cleaning of shelving, drawers, and removable interior parts
3. Mechanical and Electrical Repairs
• Replacement or repair of worn mechanical parts (door latches, seals, hinges, etc.)
• Inspection and restoration of control interfaces, thermostats, sensors, and displays
• Evaluation of wiring, relays, fuses, and power supply components for safety and integrity
4. Refrigeration System and Compressor Evaluation
• Testing of compressor function, condenser coils, and evaporators
• Inspection for refrigerant leaks and pressure performance (if applicable)
• Verification of proper airflow, fan operation, and defrost cycles
5. Temperature and Performance Testing
• Testing of temperature sensors and control boards
• Verification of temperature stability and uniformity throughout the chamber
• Testing of multiple setpoints (e.g., +2°C to +8°C) over extended operating periods
6. Safety and Compliance Checks
• Inspection of grounding and electrical insulation per lab safety standards
• Testing of alarm systems (if applicable) for temperature excursions or power failure
7. Final Quality Control and Documentation
• Multi-day operational test under real-world conditions
• Final cleaning, inspection, and performance validation
• Detailed service report with temperature logs, repair notes, and certification of refurbishment
Trust the Experts at American Instrument Exchange
With over 50 years of industry experience, American Instrument Exchange is a leading provider of high-quality refurbished laboratory equipment. Our proven laboratory refrigerator refurbishment protocol ensures consistent, accurate cold storage—so you can safeguard your samples, reagents, and research materials with confidence.
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.
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.
