Sanyo MDF-U537 Biomedical Freezer

Brand : Sanyo

Product Code : SKU 2569B FREEZER

Quantity

Price Match Policy

Shipping

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

Sanyo MDF-U537 Biomedical Freezer

Many laboratories need storage temperatures below a standard laboratory refrigerator but don't require the extreme temperatures of an ultra-low freezer. The Sanyo MDF-U537 Biomedical Freezer fills that niche by providing dependable storage between -20°C and -30°C in a spacious 17 cubic foot upright cabinet. Designed specifically for research and laboratory applications, the MDF-U537 combines excellent temperature stability with thoughtful features that help protect valuable samples while improving day-to-day laboratory workflow.

The MDF-U537 is an excellent choice for biotechnology companies, pharmaceutical manufacturers, hospitals, universities, clinical laboratories, environmental laboratories, and industrial research facilities storing enzymes, biological samples, research reagents, diagnostic materials, and laboratory chemicals that require dependable subzero storage. Its unique top-and-bottom twin door design minimizes cold air loss during routine access, while individually partitioned storage compartments help improve temperature recovery after door openings.

Many laboratories pair the MDF-U537 with laboratory refrigerators for refrigerated reagents, ultra-low freezers for long-term sample preservation, biosafety cabinets for sterile sample preparation, and centrifuges to create a complete laboratory cold storage workflow.

Sanyo MDF-U537 Key Features

17 cu. ft. (482 L) capacity
Temperature range: -20°C to -30°C
Twin upper and lower insulated doors
Five individually partitioned storage compartments
Microprocessor temperature controller
Digital temperature display
High and low temperature alarms
Power failure alarm
Self-diagnostic monitoring system
Compressor protection circuitry
Lockable doors
Rear access port for probes
Refurbished and performance tested by American Instrument Exchange
90-day warranty included

Sanyo MDF-U537 Overview

The MDF-U537 was engineered for laboratories that require dependable frozen storage while accessing samples frequently throughout the day. One of its most valuable design features is the dual-door cabinet, which allows users to open either the upper or lower compartment independently. This reduces cold air loss compared with a single full-height door and helps maintain more stable temperatures throughout the cabinet.

Inside the cabinet, five compartmentalized storage sections improve organization while helping limit temperature fluctuations during routine sample retrieval. Combined with Sanyo's microprocessor controller, alarm system, and self-diagnostic functions, the MDF-U537 provides dependable performance for laboratories storing valuable research materials without the higher purchase and operating costs associated with an ultra-low freezer.

Common Applications

The Sanyo MDF-U537 is commonly used for storing:

Laboratory reagents
Biological samples
Research chemicals
Enzymes
Protein samples
Cell culture reagents
Diagnostic kits
Calibration standards
Environmental samples
Quality control materials

Ideal Laboratory Types

The MDF-U537 is well suited for:

Biotechnology companies
Pharmaceutical manufacturers
Academic research laboratories
Clinical laboratories
Hospitals
Environmental laboratories
Industrial research facilities
Quality control laboratories

Laboratories requiring dependable -20°C to -30°C storage with excellent sample organization will appreciate the MDF-U537's combination of capacity, accessibility, and proven reliability.

Why Choose the Sanyo MDF-U537?

The MDF-U537 is designed for laboratories that need high-capacity frozen storage with frequent sample access. Its twin-door configuration minimizes cold air loss while allowing users to access only the portion of the cabinet needed, improving temperature recovery and reducing unnecessary thermal cycling.

For laboratories storing a wide variety of research materials, the compartmentalized interior also makes inventory organization significantly easier than a single open storage chamber.

Typical Stored Materials

The MDF-U537 is commonly used to preserve:

Research reagents
Antibodies
Enzymes
Protein samples
Laboratory chemicals
Cell culture media
Diagnostic materials
Biological specimens
Quality control samples

Sanyo MDF-U537 Key Specifications

Capacity

17 cu. ft. (482 liters)

Temperature Range

-20°C to -30°C

Construction

Powder-coated steel exterior
Durable insulated cabinet
Twin insulated outer doors
Five compartment storage design

Monitoring & Controls

Microprocessor temperature controller
Digital temperature display
High/low temperature alarms
Power failure alarm
Self-diagnostic monitoring
Compressor protection
Remote alarm contacts

Refrigeration System

Hermetic compressor
Refrigerant: R-407D
Manual defrost

Electrical Requirements

115V, 60 Hz

Exterior Dimensions

31.65" W × 30.39" D × 70.94" H

Interior Dimensions

25.90" W × 23.89" D × 50.08" H (combined upper and lower chambers)

Weight

288 lbs. shipping weight (131 kg unit weight)

Operating Costs & Energy Considerations

The MDF-U537 utilizes a single-compressor refrigeration system designed for dependable laboratory operation while maintaining storage temperatures between -20°C and -30°C. Routine condenser cleaning, adequate ventilation around the cabinet, and avoiding unnecessary door openings will help maximize refrigeration efficiency and maintain stable cabinet temperatures.

Specifications compiled from Sanyo manufacturer literature and American Instrument Exchange product information.

Refurbishment & Testing Process

Every Sanyo MDF-U537 received by American Instrument Exchange undergoes a comprehensive inspection and temperature performance evaluation before shipment. Our technicians verify controller accuracy, refrigeration performance, alarm functionality, compressor operation, and door seals. Temperature stability is confirmed using calibrated instrumentation, worn components are replaced as needed, and each freezer is thoroughly cleaned before delivery.

Laboratories building complete cold storage systems frequently purchase laboratory refrigerators, ultra-low freezers, biosafety cabinets, centrifuges, and cryogenic storage systems from American Instrument Exchange.

Shipping & Installation Considerations

The Sanyo MDF-U537 ships by freight from American Instrument Exchange. Before installation, laboratories should verify doorway clearances, available floor space, electrical service, and adequate ventilation around the condenser. Allow the freezer to reach its operating temperature before loading valuable samples to ensure optimal temperature stability.

Frequently Asked Questions

Why does the MDF-U537 have two outer doors?

The upper and lower doors reduce cold air loss during routine access by allowing users to open only the section containing the required samples. This improves temperature recovery and helps protect the remaining contents.

Is the MDF-U537 an ultra-low freezer?

No. The MDF-U537 is a biomedical freezer designed to operate between -20°C and -30°C, making it ideal for many research and laboratory storage applications without the higher operating costs of an ultra-low freezer.

What types of materials are commonly stored in the MDF-U537?

The freezer is commonly used for enzymes, proteins, laboratory reagents, biological specimens, research chemicals, diagnostic materials, and quality control samples requiring dependable subzero storage.

How is the MDF-U537 tested before shipment?

Every refurbished Sanyo MDF-U537 is inspected and tested by American Instrument Exchange technicians. Temperature accuracy, controller operation, refrigeration performance, alarms, compressor function, and door seals are verified before the freezer is cleaned and prepared for shipment.

Testing Procedures for Used and Refurbished Laboratory Freezers

Cold Storage Reliability from American Instrument Exchange

At American Instrument Exchange, every used and refurbished laboratory freezer we offer undergoes a comprehensive multi-point testing protocol to ensure optimal performance, temperature stability, and long-term reliability. Our rigorous testing procedures are designed to meet the demanding standards of biomedical, pharmaceutical, research, and clinical environments—so you can trust your freezer to protect your valuable samples and materials.

Why Testing Refurbished Laboratory Freezers Is Critical

Before any laboratory freezer is placed back into service, it must be carefully tested for:

Consistent temperature control and uniformity across internal zones
Compressor functionality and refrigeration system performance
Seal integrity and insulation efficiency to prevent temperature loss
Electrical safety and alarm system operation

Thorough testing minimizes the risk of temperature excursions, equipment failure, and product loss—especially for temperature-sensitive items like reagents, biological samples, and vaccines.

Our structured testing protocol ensures that all used and refurbished laboratory freezers meet or exceed manufacturer specifications and industry expectations.

Key Testing Procedures for Laboratory Freezers

1. Visual and Structural Inspection

Examine the exterior for dents, corrosion, or physical damage
Check door gaskets, hinges, and latches for wear and functionality
Inspect power cords, control panels, and internal compartments

2. Functional Startup and System Check

Power on the unit to verify startup sequence, control panel functionality, and display readability
Test programmable settings, alarms, and door-open sensors
Ensure proper door closure and sealing performance

3. Temperature Performance and Stability Testing

Test temperature sensors using certified thermometers or probes
Monitor chamber temperature at multiple points over extended run periods
Verify temperature uniformity and accuracy across common lab setpoints (e.g., -20°C, -30°C)

4. Compressor and Refrigeration System Evaluation

Test compressor startup, cycling behavior, and operating noise
Check condenser coils, evaporators, and fans for performance and cleanliness
Inspect for refrigerant leaks or pressure issues that may affect efficiency

5. Electrical Safety and Compliance Verification

Confirm proper grounding and insulation of all electrical components
Conduct safety testing to meet laboratory equipment electrical standards
Verify functionality of alarms for power loss, temperature excursions, and system faults

6. Final Quality Assurance and Runtime Validation

Conduct multi-day test cycle to confirm stable performance under continuous use
Record temperature data, alarm responses, and compressor cycling metrics
Complete final inspection and prepare detailed service documentation

Reliable Cold Storage, Backed by Testing Excellence

Each refurbished laboratory freezer from American Instrument Exchange is tested and certified for cold storage accuracy, safety, and performance. Whether upright, undercounter, flammable-material rated, or specialty-purpose, our lab freezers are restored to meet real-world research and clinical demands.

Trust American Instrument Exchange for dependable, tested, and warrantied laboratory refrigeration—ready to support your lab from day one.

Repair and Refurbishment Protocol for Used Laboratory Freezers
Certified Cold Storage Performance from American Instrument Exchange

At American Instrument Exchange, every used laboratory freezer we offer is subjected to a comprehensive repair and refurbishment protocol. Whether it’s a general-purpose lab freezer, flammable-material grade unit, or undercounter model, our goal is to restore each system to peak performance—ensuring consistent temperature control and reliable operation.

Why Choose a Refurbished Laboratory Freezer 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 freezer 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 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 Calibration 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., -20°C to -30°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
• Final cleaning, inspection, and performance validation
• Detailed service report with temperature logs and repair notes

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 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.

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.