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Thermo Precision 3727 Refrigerated Incubator
Many laboratory applications require precise temperature control both above and below ambient conditions without the complexity of carbon dioxide or humidity regulation. Environmental microbiology, biochemical oxygen demand (BOD) testing, pharmaceutical stability studies, food quality analysis, seed germination, and general microbiological research all depend on dependable refrigeration and accurate temperature control to produce consistent, repeatable results. The Thermo Precision 3727 Refrigerated Incubator is designed to meet these needs with a 6.1 cubic foot (173 L) chamber, a temperature range of -10°C to 60°C, forced-air circulation, and a microprocessor-based temperature controller capable of maintaining precise operating conditions across a wide range of laboratory applications.
Unlike a CO₂ incubator designed for mammalian cell culture, the Precision 3727 is a versatile refrigerated incubator intended for laboratories requiring accurate temperature control over a broad operating range. Its compressor-based refrigeration system allows operation below ambient temperatures, while forced-air circulation promotes excellent chamber uniformity. Purchasing a refurbished Thermo Precision 3727 from American Instrument Exchange provides laboratories with a dependable refrigerated incubator suitable for routine quality control, environmental testing, microbiological studies, and stability testing at a substantial savings compared to purchasing new equipment.
Thermo Precision 3727 Key Features
6.1 cu. ft. (173 L) chamber capacity
Temperature range: -10°C to 60°C
Microprocessor temperature controller
Forced-air circulation
Temperature resolution to 0.1°C
Compressor-based refrigeration system
Adjustable shelving
Over- and undertemperature protection
Audible and visual alarms
Access port for probes and monitoring equipment
Cooling bypass mode for improved temperature control above ambient
115V electrical operation
90-day warranty from American Instrument Exchange
Designed for Refrigerated Laboratory Incubation
The Thermo Precision 3727 is engineered for laboratories that require dependable temperature regulation across a broad operating range. Its refrigeration system allows samples to be maintained below ambient temperatures while the microprocessor controller continuously monitors chamber conditions to deliver accurate temperature regulation. Forced-air circulation distributes conditioned air throughout the chamber, minimizing temperature gradients and promoting excellent uniformity for sensitive laboratory procedures.
Because the Precision 3727 is designed specifically for refrigerated incubation rather than cell culture, it is ideally suited for laboratories performing microbiological testing, environmental analysis, pharmaceutical stability studies, food quality testing, and other applications where accurate temperature control is the primary requirement. The combination of refrigeration, precise electronic controls, and dependable airflow makes the incubator a versatile solution for research, industrial, and quality assurance laboratories.
Common Applications
The Thermo Precision 3727 is commonly used for:
Biochemical oxygen demand (BOD) testing
Environmental microbiology
Water quality analysis
Food and beverage quality testing
Pharmaceutical stability studies
Seed germination
Entomology
Dairy product evaluation
Microbial incubation
Quality control testing
General laboratory incubation
Educational and research laboratories
The Precision 3727 is frequently used alongside laboratory refrigerators for sample storage, laboratory freezers for long-term preservation, biosafety cabinets for aseptic microbiological work, centrifuges for sample preparation, and autoclaves for sterilizing media, glassware, and laboratory equipment before incubation.
Ideal Laboratory Environments
The Thermo Precision 3727 is well suited for environmental testing laboratories, wastewater treatment facilities, food and beverage quality laboratories, pharmaceutical quality assurance departments, microbiology laboratories, agricultural research centers, university teaching laboratories, industrial research facilities, and government testing laboratories. Its broad operating temperature range and dependable refrigeration system make it a versatile choice for laboratories performing routine incubation and temperature-controlled testing across multiple scientific disciplines.
Why Choose the Thermo Precision 3727?
The Thermo Precision 3727 combines dependable refrigeration, precise electronic temperature control, and forced-air circulation in a compact laboratory incubator designed for general scientific applications. Its ability to maintain temperatures from -10°C to 60°C makes it significantly more versatile than conventional warm-air incubators, supporting applications that require both refrigerated and elevated-temperature operation.
Whether performing BOD testing, pharmaceutical stability studies, environmental microbiology, food quality analysis, seed germination, or routine laboratory incubation, the Thermo Precision 3727 delivers the stable temperature control and reliable performance required for consistent scientific results.
Performance and Temperature Uniformity
The Thermo Precision 3727 Refrigerated Incubator is designed to deliver accurate and dependable temperature control across a broad operating range, making it suitable for laboratories performing both refrigerated and elevated-temperature incubation. Its compressor-based refrigeration system allows operation from -10°C to 60°C, providing substantially greater flexibility than conventional laboratory incubators that operate only above ambient temperature. This wide operating range enables a single incubator to support multiple research, environmental, and quality control applications without requiring separate heating and cooling systems.
A microprocessor-based temperature controller continuously monitors chamber conditions and adjusts heating and cooling output to maintain the programmed temperature. Forced-air circulation distributes conditioned air evenly throughout the chamber, minimizing temperature gradients and promoting excellent uniformity across all shelving positions. Rapid recovery following routine door openings helps maintain consistent environmental conditions during daily laboratory use and contributes to reproducible experimental results.
The Precision 3727 also incorporates over- and undertemperature protection along with audible and visual alarm systems that notify laboratory personnel if chamber conditions fall outside programmed limits. An integrated access port allows temperature probes, monitoring devices, or other instrumentation to be introduced into the chamber without compromising environmental control, making the incubator well suited for validation studies and regulated laboratory environments.
Typical Samples and Laboratory Applications
The Thermo Precision 3727 supports a wide variety of laboratory procedures that require precise temperature regulation rather than carbon dioxide control. Typical samples include bacterial cultures, fungal cultures, yeast, environmental water samples, wastewater samples, food products, dairy products, soil samples, plant materials, seeds, pharmaceutical products, biological reagents, culture media, and quality control specimens.
Common laboratory applications include biochemical oxygen demand (BOD) testing, environmental microbiology, water quality analysis, food safety testing, pharmaceutical stability studies, shelf-life evaluations, seed germination, entomology research, microbiological quality control, environmental monitoring, educational laboratory instruction, and general scientific incubation. Its ability to operate below ambient temperature also makes it useful for studies requiring refrigerated incubation conditions that cannot be achieved with standard warm-air laboratory incubators.
Audible and Visual Temperature Alarms; Over- and Undertemperature Protection
Access Port
Yes
Electrical Requirements
115V, 60 Hz
Specifications are compiled from manufacturer literature and American Instrument Exchange product information. Specifications may vary depending on production year and installed options. Please verify chamber dimensions, electrical requirements, shelf configuration, and included accessories prior to purchase.
Frequently Asked Questions
What is the difference between a refrigerated incubator and a CO₂ incubator?
A refrigerated incubator is designed for precise temperature control over a wide operating range and is commonly used for microbiology, environmental testing, and stability studies. A CO₂ incubator is specifically designed for mammalian cell culture and regulates carbon dioxide and humidity in addition to temperature.
What applications require temperatures below ambient?
Applications such as biochemical oxygen demand (BOD) testing, environmental microbiology, food quality analysis, pharmaceutical stability testing, seed germination, and certain entomology studies often require temperatures below normal room temperature. The Precision 3727 is designed to support these refrigerated incubation requirements.
Why is forced-air circulation important?
Forced-air circulation distributes conditioned air evenly throughout the chamber, helping minimize temperature differences between shelves and improving temperature recovery after the door has been opened. This contributes to more consistent incubation conditions and reproducible laboratory results.
Can the Precision 3727 be used for pharmaceutical stability testing?
Yes. The incubator's broad temperature range, precise digital control, and excellent temperature uniformity make it suitable for many pharmaceutical, biotechnology, and quality assurance stability studies where controlled temperature conditions are required.
Which laboratories commonly use the Thermo Precision 3727?
The Precision 3727 is commonly found in environmental testing laboratories, food and beverage quality laboratories, pharmaceutical quality assurance departments, microbiology laboratories, agricultural research facilities, wastewater treatment laboratories, universities, and industrial research organizations.
Is this incubator suitable for general laboratory use?
Absolutely. Its ability to provide both refrigerated and elevated-temperature incubation makes it a versatile solution for laboratories performing a wide variety of scientific, industrial, educational, and quality control applications.
Why purchase a refurbished Thermo Precision 3727 from American Instrument Exchange?
A refurbished Thermo Precision 3727 Refrigerated Incubator from American Instrument Exchange provides laboratories with dependable refrigerated incubation at a substantial savings compared to purchasing new equipment. Featuring a 6.1 cubic foot chamber, -10°C to 60°C operating range, microprocessor temperature control, forced-air circulation, and a compressor-based refrigeration system, the Precision 3727 is an excellent choice for microbiology, environmental testing, pharmaceutical stability studies, food quality analysis, and general laboratory incubation. Every unit is thoroughly inspected and tested prior to shipment and includes a 90-day warranty from American Instrument Exchange.
Click here to see a video of this incubator on our YouTube channel.
Testing Procedures for Used and Refurbished Laboratory Incubators Ensure Quality and Stability Before Use
Used and refurbished laboratory incubators from American Instrument Exchange are thoroughly tested to ensure optimal performance and temperature stability with laboratory safety standards. Each unit undergoes a detailed inspection and functionality assessment to meet the needs of research, clinical, and industrial labs.
Why Testing Used Laboratory Incubators Is Essential
Before a laboratory incubator is reintroduced into any work environment, it must be tested for:
• Temperature uniformity and accuracy
• Airflow and humidity control (if applicable)
• Door seal integrity and insulation effectiveness
• Electrical and safety system compliance
Comprehensive testing reduces the risk of culture loss, contamination, and equipment failure—especially critical in applications involving cell culture, microbiology, pharmaceutical research, and diagnostics.
Our multi-point testing protocol for used and refurbished incubators ensures reliability, safety, and performance across all models and brands.
Key Testing Procedures for Refurbished and Used Laboratory Incubators
1. Initial Visual Inspection
• Check for cosmetic damage, corrosion, and wear to exterior surfaces, door hinges, and gasket seals
• Inspect power cord, wiring, and display panel for any defects or signs of tampering
• Confirm that shelves, chamber components, and internal fixtures are present and undamaged
2. Functional Testing
• Power on the incubator and verify all display indicators and alarms function correctly
• Test door latch and seal mechanisms for proper closure and insulation
• Run basic temperature cycles to ensure the unit maintains stability over time
3. Temperature Accuracy and Uniformity Tests
• Test internal sensors and controllers using temperature probes
• Measure temperature consistency at multiple chamber locations over several hours
• Confirm that programmable temperature settings respond accurately
4. Airflow and Humidity Control (if applicable)
• Test internal fan operation and airflow distribution
• For humidified incubators, inspect and test humidity reservoirs, sensors, and control systems
• Check for condensation buildup and confirm environmental stability
5. Electrical Safety and Compliance Checks
• Ensure all electrical components are properly grounded
• Perform insulation resistance and leakage current tests
• Verify compliance with current electrical safety standards for laboratory equipment
6. Final Quality Assurance Checklist
• Perform full cycle testing at various temperature setpoints
• Document performance benchmarks and results
All refurbished incubators from American Instrument Exchange are backed by our commitment to quality and precision. With our strict testing procedures, you can rely on your incubator to deliver dependable results from day one.
Repair and Refurbishment Protocol for Used Laboratory Incubators Performance and Quality from American Instrument Exchange
At American Instrument Exchange, every used laboratory incubator we sell goes through a repair and refurbishment protocol. Whether it’s a standard, CO₂, or refrigerated incubator, our goal is to restore each unit to laboratory-level performance—ensuring temperature accuracy, environmental stability, and long-term reliability in your lab.
Why Choose a Refurbished Laboratory Incubator from American Instrument Exchange?
• Fully tested for performance and safety
• Backed by a warranty
• Cost-effective alternative to new equipment
• Environmentally sustainable through reuse and restoration
• Refurbished by expert technicians with decades of lab equipment experience
Step-by-Step Refurbishment Protocol
Every incubator at American Instrument Exchange follows this comprehensive, multi-stage process:
1. Initial Intake & Inspection
• Visual inspection for cosmetic wear, corrosion, dents, or broken components
• Mechanical assessment of door hinges, gaskets, seals, and chamber components
• Document any missing parts or issues requiring repair or replacement
2. Cleaning and Decontamination
• Thorough internal and external cleaning using non-abrasive solutions
• Decontamination/cleaning of surfaces to remove biological, chemical, or particulate residue
• Cleaning of removable parts (e.g., shelves, trays, etc.)
3. Mechanical and Electrical Repair
• Repair or replacement of worn mechanical components such as door latches, fans, hinges, and seals
• Evaluation and repair of control panels, switches, thermostats, and displays
• Inspection and testing of wiring, fuses, relays, and power supplies
4. Environmental Control System Assessment
• For CO₂ incubators: CO₂ sensors, regulators, and gas delivery systems are tested
• For refrigerated incubators: compressors, condensers, and cooling systems are evaluated for performance and leaks
• Fan motors and airflow systems are tested to ensure uniform environmental conditions
5. Temperature and Sensor Testing
• All temperature sensors and controllers are tested using thermometers/probes
• Uniformity and accuracy tested at multiple chamber locations
• For humidified or CO₂ incubators, humidity and CO₂ stability are verified
6. Safety System Testing
• Test of over-temperature protection systems and alarms
• Evaluation of door sensors, safety interlocks, and power failure recovery
7. Final Quality Control and Documentation
• Full performance test run over 24 hours
• Validation of setpoints for temperature, CO₂ (if applicable), and humidity (if applicable)
• Final inspection and cleaning before packaging
• Complete service report
Trust the Experts at American Instrument Exchange
With over 50 years in the lab equipment industry, American Instrument Exchange is a trusted source for high-quality refurbished laboratory incubators. Our proven refurbishment protocol ensures every unit is reliable, accurate, and ready to meet the demands of your lab from day one.
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.
