A full front view of a white Thermo Scientific 3552-10A flammable material storage freezer, featuring a large single door with a vertical handle on the left, top-mounted mechanical control dial, and prominent orange safety hazard label on the top right against an American Instrument Exchange backdrop.

Thermo 3552-10A flammable material storage freezer

Product Code : SKU 2583B FREEZER

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

Thermo Scientific 3552-10A Flammable Material Storage Freezer

Proper chemical storage is about more than maintaining temperature—it is also about protecting laboratory personnel, valuable materials, and the facility itself. The Thermo Scientific 3552-10A Flammable Material Storage Freezer was engineered specifically for laboratories that routinely store flammable solvents and volatile chemicals at frozen temperatures, combining dependable refrigeration with a spark-free interior design that helps support safe laboratory practices.

With approximately 20 cubic feet of storage capacity, a manual-defrost refrigeration system, and an operating temperature range of -20°C to -12°C, the 3552-10A provides dependable frozen storage for flammable laboratory materials while isolating electrical components from the storage chamber to reduce potential ignition sources. It is an excellent choice for pharmaceutical manufacturers, biotechnology companies, university chemistry departments, environmental laboratories, and industrial research facilities.

Laboratories often maintain multiple cold storage systems depending on the materials being stored. Routine reagents and media are commonly kept in laboratory refrigerators, biological materials may be stored in laboratory freezers or ultralow freezers, while volatile chemicals requiring frozen storage are best housed in a dedicated flammable material storage freezer such as the 3552-10A.

Thermo Scientific 3552-10A Key Features

Approximately 20 cu. ft. storage capacity
Operating temperature range: -20°C to -12°C
Spark-free interior with no electrical components inside the storage chamber
Manual defrost refrigeration system
External thermostat controls
Four fixed evaporator shelves
Magnetic door gasket
Key-locking door
Designed to support OSHA, NFPA, and UL laboratory safety requirements
Refurbished and performance tested by American Instrument Exchange
90-day warranty included

Thermo Scientific 3552-10A Overview

Unlike a conventional laboratory freezer, the Thermo Scientific 3552-10A was designed specifically for storing flammable chemicals. Electrical components that could potentially generate sparks—including switches, relays, thermostats, and wiring—are isolated from the refrigerated compartment, reducing ignition hazards should flammable vapors escape from improperly sealed containers.

This distinction is important because a flammable material storage freezer is not the same as an explosion-proof freezer. Flammable material storage freezers are intended to reduce ignition sources inside the cabinet. Explosion-proof equipment is designed for hazardous environments where flammable vapors may also exist outside the cabinet. Selecting the proper equipment depends on your laboratory's risk assessment and applicable safety regulations.

Many laboratories that utilize dedicated chemical storage equipment also operate biosafety cabinets, CO₂ incubators, and refrigerated centrifuges for biological workflows, creating separate cold storage strategies for chemical and biological materials.

Common Applications

The Thermo Scientific 3552-10A is commonly used for storing:

Ethanol
Methanol
Acetone
Isopropyl alcohol
Organic solvents
Flammable laboratory reagents
Volatile pharmaceutical intermediates
Chemical standards
Research compounds
Industrial quality control samples

Its specialized construction makes it appropriate wherever laboratories routinely store volatile chemicals that require frozen temperatures while maintaining compliance with institutional safety policies.

Ideal Laboratory Types

The 3552-10A is particularly well suited for:

Pharmaceutical research laboratories
Biotechnology companies
University chemistry laboratories
Chemical manufacturing facilities
Environmental testing laboratories
Government research laboratories
Industrial quality control laboratories
Materials science laboratories

Safety & Temperature Protection

The primary advantage of the 3552-10A is that it addresses two critical laboratory requirements simultaneously: dependable frozen storage and reduced ignition risk. By locating electrical components outside the refrigerated compartment, the freezer helps minimize potential ignition sources while maintaining stable storage temperatures for volatile materials. Manual defrost operation also eliminates automatic warming cycles that can occur in frost-free systems, making it a popular choice for temperature-sensitive chemical storage.

Laboratories storing biological specimens such as DNA libraries, stem cells, or cell lines should instead utilize dedicated ultralow freezers, while routine non-flammable frozen materials are generally better suited for standard laboratory freezers.

Typical Stored Materials

Typical materials include:

Ethanol solutions
Methanol
Acetone
Isopropyl alcohol
Organic solvents
Volatile research compounds
Flammable laboratory standards
Chemical reference materials

Thermo Scientific 3552-10A Key Specifications

Capacity

Approximately 20.6 cu. ft.

Temperature Range

-20°C to -12°C

Refrigeration System

Manual defrost
Built-in evaporator shelves for even cooling

Safety Features

Spark-free interior
External electrical components
Key-locking door
Magnetic door gasket

Interior Configuration

Four fixed shelves

Electrical Requirements

115V, 60 Hz

Dimensions

Exterior: Approximately 36" W × 32" D × 73" H
Interior: Approximately 20" W × 27" D × 57" H

Operating Costs & Maintenance

The 3552-10A utilizes a straightforward manual-defrost refrigeration system designed for dependable long-term operation. Routine condenser cleaning, periodic manual defrosting, inspection of door gaskets, and annual calibration of temperature monitoring devices help maximize performance and support laboratory quality programs.

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

Refurbishment & Testing Process

Every Thermo Scientific 3552-10A received by American Instrument Exchange undergoes a comprehensive inspection and performance evaluation before shipment. Our technicians verify temperature accuracy using calibrated instruments, inspect the refrigeration system, confirm proper operation of the external controls, evaluate door seals, inspect cabinet integrity, replace worn components as necessary, and thoroughly clean the freezer before delivery.

Laboratories outfitting complete facilities frequently purchase laboratory refrigerators, laboratory freezers, ultralow freezers, biosafety cabinets, and centrifuges from American Instrument Exchange to create a consistent, cost-effective laboratory equipment solution.

Shipping & Installation Considerations

The Thermo Scientific 3552-10A ships by freight from American Instrument Exchange. Before delivery, laboratories should verify doorway clearances, electrical service, available floor space, and ventilation requirements. Installation should always comply with institutional chemical hygiene plans and all applicable fire and laboratory safety regulations.

Frequently Asked Questions

What makes the Thermo Scientific 3552-10A different from a standard laboratory freezer?

The 3552-10A is specifically designed for storing flammable materials. Electrical components capable of generating sparks are isolated from the storage chamber, helping reduce ignition hazards associated with volatile chemical vapors.

Is a flammable material storage freezer explosion-proof?

No. Flammable material storage freezers reduce ignition sources inside the cabinet but are not designed for hazardous room environments. Explosion-proof freezers provide a different level of protection and should be selected when required by your facility's hazard assessment.

Why does this freezer use manual defrost?

Manual-defrost systems avoid the warming cycles associated with automatic defrost operation, making them well suited for many temperature-sensitive laboratory chemicals while also providing a simpler refrigeration system.

How is the freezer tested before shipment?

Every refurbished Thermo Scientific 3552-10A is inspected, cleaned, and performance tested by American Instrument Exchange technicians to verify temperature accuracy, refrigeration performance, control operation, and overall system reliability before 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.