The Fisherbrand Isotemp GTFBG49RSSA Double-Door Laboratory Refrigerator provides 49 cu. ft. of refrigerated storage capacity for laboratories that need substantial space for reagents, media, proteins, samples, and other temperature-sensitive materials. Designed for the demands of everyday use in research, clinical, biotechnology, pharmaceutical, and industrial laboratories, this full-height refrigerator combines a 2°C to 10°C operating range, solid stainless-steel front panels, dual doors, digital temperature control, adaptive defrost, and remote alarm capability.
The large two-door configuration provides an important practical advantage for busy laboratories. Users can access one side of the refrigerator without opening the entire cabinet, helping limit the amount of warm ambient air introduced during routine sample retrieval. With nearly 50 cu. ft. of interior space, the GTFBG49RSSA is particularly useful for laboratories that have outgrown smaller single-door refrigerators or need to consolidate refrigerated materials into a centralized storage system.
This used Fisherbrand Isotemp laboratory refrigerator is tested and reconditioned by American Instrument Exchange prior to shipment and includes a 90-day warranty.
Key Features
49 cu. ft. capacity for high-volume laboratory storage
2°C to 10°C operating range
Double solid doors for convenient access to the large refrigerated chamber
Stainless-steel front panels and doors for durability and easy cleaning
Digital temperature controller for straightforward operation
Rear access port for probes, monitoring equipment, or other compatible connections
Remote alarm contacts for connection to compatible external monitoring systems
Keyed door locks for controlled access
Adaptive defrost system
Natural refrigerant
Low heat output and quiet operation
Full-height cabinet with large interior storage capacity
90-day warranty from American Instrument Exchange
Overview
Large-capacity laboratory refrigerators play an important role in facilities that maintain substantial inventories of temperature-sensitive materials. The Fisherbrand Isotemp GTFBG49RSSA offers 49 cu. ft. of refrigerated space, making it well suited for laboratories that need significantly more capacity than a conventional single-door refrigerator can provide.
The cabinet is divided behind two solid doors, allowing laboratory personnel to access a portion of the refrigerator without exposing the entire chamber to room-temperature air. This is particularly useful in shared laboratories where samples and reagents may be accessed frequently throughout the workday.
The solid-door design also makes the GTFBG49RSSA particularly appropriate for applications where users do not need continuous visual access to stored materials. Compared with a glass-door refrigerator, solid insulated doors can help reduce thermal transfer through the front of the cabinet and are a practical choice for longer-term storage or laboratories where materials are organized into clearly designated shelf locations.
Stainless-steel front panels and doors provide a durable exterior surface suited to frequent use and routine cleaning. The refrigerator also incorporates a digital temperature controller, adaptive defrost, keyed door locks, a rear access port, and remote alarm contacts to support everyday laboratory operation.
For laboratories looking to expand refrigerated storage without purchasing multiple smaller refrigerators, the GTFBG49RSSA provides a large centralized storage platform in a single full-height cabinet.
Common Applications
The Fisherbrand GTFBG49RSSA is well suited for reagent storage, media storage, protein storage, sample preparation materials, laboratory consumables requiring refrigeration, standards, controls, and other non-critical temperature-sensitive products maintained within its specified 2°C to 10°C operating range.
Its large capacity makes it particularly useful for laboratories maintaining bulk quantities of buffers, prepared media, reagents, and other supplies that can quickly consume the available space in smaller laboratory refrigerators.
The refrigerator can also serve as centralized refrigerated storage for shared research facilities, core laboratories, biotechnology companies, pharmaceutical research groups, and industrial laboratories where multiple researchers require access to common refrigerated materials.
Ideal Laboratory Types
The Fisherbrand Isotemp GTFBG49RSSA is a strong choice for biotechnology laboratories, pharmaceutical research facilities, academic research laboratories, clinical laboratories, life science facilities, chemistry laboratories, industrial laboratories, and R&D facilities.
Its nearly 50 cu. ft. capacity can be especially valuable in high-throughput laboratories or facilities with large reagent and media inventories. It can also provide an efficient storage solution for growing laboratories that want to consolidate materials currently spread across several smaller refrigerators.
The stainless-steel front and solid-door configuration are particularly appropriate for laboratories that prioritize durable construction, easy cleaning, and high-capacity refrigerated storage over continuous visibility of cabinet contents.
Performance & Temperature Uniformity
The Fisherbrand Isotemp GTFBG49RSSA operates over a 2°C to 10°C temperature range, covering the conditions commonly used for general laboratory refrigeration.
The digital controller allows users to monitor and manage cabinet temperature while the refrigeration system maintains the selected operating conditions. Because this is a large-capacity refrigerator, proper organization of stored materials is important for maintaining airflow and consistent temperature conditions throughout the chamber.
The solid-door design helps isolate the refrigerated chamber from ambient laboratory conditions. The double-door configuration also allows users to access only the necessary section of the refrigerator during routine use, reducing unnecessary exposure of the full cabinet interior.
Remote alarm contacts allow the refrigerator to interface with compatible external monitoring or facility alarm systems, an important feature for laboratories that want notification of refrigerator conditions outside the immediate work area.
Sample Storage Recommendations
Samples, reagents, media, and other materials should be arranged to maintain adequate airflow throughout the refrigerator. Avoid overpacking shelves or positioning large containers directly against interior air passages, as restricted airflow can contribute to temperature differences within a heavily loaded cabinet.
The large interior makes it practical to organize materials by research group, project, sample type, or frequency of use. Frequently accessed materials can be positioned near the front of the appropriate compartment, reducing the amount of time the doors need to remain open during routine retrieval.
For high-value or particularly temperature-sensitive materials, laboratories should consider using independent temperature monitoring or data logging in addition to the refrigerator's onboard temperature controls.
The rear access port can facilitate the installation of compatible independent monitoring probes without requiring cables to pass through the door gasket.
Key Specifications
Specification
Fisherbrand Isotemp GTFBG49RSSA
Manufacturer
Fisherbrand
Product Line
Isotemp
Model
GTFBG49RSSA
Product Type
General-purpose laboratory refrigerator
Configuration
Upright, double-door
Door Type
Solid
Capacity
49 cu. ft.
Temperature Range
2°C to 10°C
Exterior Dimensions
52.7"W × 32"D × 81"H
Interior Dimensions
49"W × 28.5"D × 61.75"H
Temperature Control
Digital
Access Port
Rear
Remote Alarm Contacts
Yes
Door Lock
Keyed
Defrost
Adaptive defrost
Refrigerant
Natural refrigerant
Front / Door Finish
Stainless steel
Side Finish
Gray painted
Electrical Requirements
115V, 60 Hz
Weight
597 lbs.
Warranty
90 days from American Instrument Exchange
Energy Efficiency & Operating Costs
The Fisherbrand Isotemp GTFBG49RSSA incorporates natural refrigerant, adaptive defrost, solid insulated doors, and low-heat-output operation to provide a practical refrigeration platform for everyday laboratory use.
Adaptive defrost helps manage frost accumulation according to operating conditions rather than relying solely on unnecessary fixed defrost cycles. This supports efficient evaporator operation while limiting the additional heat introduced into the cabinet during defrost.
The two-door configuration can also help reduce temperature recovery requirements during routine use. When samples are organized according to cabinet section, personnel can open only the door necessary to retrieve a particular material rather than exposing the entire 49 cu. ft. chamber to ambient laboratory air.
Actual operating costs will vary according to laboratory temperature, cabinet setpoint, sample loading, frequency and duration of door openings, and other operating conditions.
Refurbishment & Testing
American Instrument Exchange technicians inspect, clean, test, and recondition used Fisherbrand laboratory refrigerators prior to shipment.
Temperature performance is verified using calibrated temperature measurement equipment to confirm proper cooling performance and the accuracy of the refrigerator's controls and temperature readout. The refrigeration system, controller, door gaskets, handles, locks, exterior housing, access port, and other major components are inspected for integrity and functionality.
Hardware and components are repaired or replaced as necessary during the refurbishment process, and the refrigerator is thoroughly cleaned before shipment.
This Fisherbrand Isotemp GTFBG49RSSA includes a 90-day warranty from American Instrument Exchange.
Shipping & Installation
The Fisherbrand GTFBG49RSSA is a large, full-height laboratory refrigerator measuring approximately 52.7"W × 32"D × 81"H and weighing approximately 597 lbs.
Before ordering, laboratories should verify that loading docks, elevators, corridors, doorways, and other access points can accommodate the refrigerator. Its width is particularly important when evaluating the delivery path, as the cabinet may not pass through some standard laboratory or office doorways without additional planning.
Appropriate material-handling equipment should be available for unloading and positioning the refrigerator. Depending on the facility and delivery requirements, inside delivery or specialized moving services may be appropriate.
Once positioned, the refrigerator should be installed on a level surface with appropriate ventilation clearance and connected to a suitable 115V, 60 Hz electrical supply. Allow the cabinet to reach and stabilize at the desired operating temperature before introducing temperature-sensitive materials.
Related Laboratory Equipment
American Instrument Exchange carries a wide selection of laboratory refrigerators, including single-door and double-door models, glass-door refrigerators, chromatography refrigerators, undercounter refrigerators, and other specialized cold-storage systems.
Laboratories requiring colder storage conditions can also choose from laboratory freezers and ultra-low temperature freezers, while facilities handling long-term biological sample preservation can explore cryogenic storage systems.
American Instrument Exchange also supplies complementary laboratory equipment including centrifuges, incubators, biosafety cabinets, balances, water baths, shakers, and other refurbished laboratory equipment.
Frequently Asked Questions
What is the capacity of the Fisherbrand GTFBG49RSSA?
The GTFBG49RSSA provides approximately 49 cu. ft. of refrigerated capacity, making it considerably larger than a typical single-door laboratory refrigerator. It is well suited for laboratories maintaining substantial inventories of reagents, media, proteins, samples, and other refrigerated materials.
What is the temperature range of the Fisherbrand GTFBG49RSSA?
The refrigerator operates over a 2°C to 10°C temperature range, making it suitable for many common general-purpose laboratory refrigeration applications.
What are the advantages of a double-door laboratory refrigerator?
A double-door refrigerator allows users to access one portion of the cabinet without opening the entire refrigerated chamber. This can reduce the amount of warm ambient air introduced during routine sample retrieval and can also make it easier to organize materials by laboratory group, project, or application.
Why choose solid doors instead of glass doors?
Solid doors are a practical choice when users do not need to visually inspect materials without opening the refrigerator. They provide a robust insulated barrier between the refrigerated chamber and the surrounding laboratory and are particularly well suited for bulk storage, longer-term storage, and well-organized sample inventories.
Is the entire GTFBG49RSSA cabinet stainless steel?
The refrigerator features stainless-steel front panels and solid stainless-steel doors, while the cabinet sides have a gray painted finish. This provides a durable, easy-to-clean surface on the areas most frequently handled during everyday laboratory use.
Does the GTFBG49RSSA have an access port?
Yes. A rear access port provides a route for compatible monitoring probes or other connections into the refrigerated chamber without requiring cables to pass through the door gasket.
Can the Fisherbrand GTFBG49RSSA be connected to an external alarm system?
The refrigerator includes remote alarm contacts that can be used with compatible external monitoring or facility alarm systems. Laboratories should verify compatibility with their specific monitoring system before installation.
Is this refrigerator suitable for critical biological or pharmaceutical storage?
The GTFBG49RSSA is designed as a general-purpose laboratory refrigerator. Laboratories storing critical, irreplaceable, regulated, or highly temperature-sensitive materials should evaluate whether a refrigerator specifically designed and validated for those applications is required.
How is this Fisherbrand refrigerator tested before shipment?
American Instrument Exchange tests temperature-controlled equipment using calibrated temperature measurement equipment to verify cooling performance and the accuracy of temperature controls and readouts. Major cabinet, refrigeration, door, gasket, control, and hardware components are inspected, and parts are repaired or replaced as necessary before shipment.
Does the Fisherbrand GTFBG49RSSA include a warranty?
Yes. This used and reconditioned Fisherbrand Isotemp laboratory refrigerator includes a 90-day warranty from American Instrument Exchange.
CLICK HERE to see the Fisherbrand Isotemp Double-Door 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.
