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VWR 414005-128 Gravity Convection Incubator
Not every laboratory application requires forced-air circulation or the specialized environmental controls found in CO₂ incubators. Many microbiology, quality control, clinical, food science, and educational laboratories benefit from the gentle, natural heating provided by a gravity convection incubator, particularly when working with samples that are susceptible to drying or disturbance. The VWR 414005-128 Gravity Convection Incubator was designed specifically for these routine laboratory applications, providing dependable temperature stability in a compact 1.1 cubic foot (32-liter) benchtop format. Its gravity convection heating system delivers uniform temperatures without circulating fans, making it an excellent choice for incubating microbiological cultures, warming media, conditioning samples, and other general laboratory procedures.
Unlike forced-air incubators, which actively circulate heated air throughout the chamber, the VWR 414005-128 relies on natural convection to distribute heat. This gentler heating method reduces evaporation from open containers and minimizes disturbance of lightweight samples, agar plates, and microbiological media. Combined with digital microprocessor controls, a tempered inner glass door, stainless steel chamber, and precise temperature regulation, the incubator provides reliable day-to-day performance for laboratories performing routine incubation tasks. Purchasing a refurbished VWR 414005-128 from American Instrument Exchange offers laboratories a dependable general-purpose incubator at substantial savings compared with purchasing new equipment.
Key Features
Approximately 1.1 cu. ft. (32 L) chamber capacity
Gravity convection heating system
Temperature range from Ambient +8°C to 65°C
Digital microprocessor controller
PT100 temperature sensor
Temperature control sensitivity of ±0.1°C
Temperature fluctuation of ±0.3°C
Stainless steel interior chamber
Tempered inner glass door
Powder-coated steel exterior
Two adjustable stainless steel shelves
Adjustable ventilation port
Digital LCD display
Timer with continuous and delayed operation
Over-temperature protection
90-day warranty from American Instrument Exchange
Designed for Routine Laboratory Incubation
The VWR 414005-128 was developed for laboratories requiring dependable, uniform heating for routine incubation rather than specialized cell culture. Its compact footprint makes it ideal for laboratories with limited bench space while still providing sufficient capacity for microbiology plates, sample containers, reagent bottles, culture tubes, and other commonly incubated laboratory materials.
Gravity convection heating gently circulates warm air through natural movement rather than mechanical fans. This design is particularly beneficial when incubating agar plates, media, powders, or lightweight samples where excessive airflow may contribute to drying or uneven sample conditions. The result is a stable incubation environment suitable for a broad range of general laboratory applications.
Common Applications
The VWR 414005-128 Gravity Convection Incubator is commonly used for:
Microbiology culture incubation
Bacterial culture growth
Agar plate incubation
Clinical laboratory procedures
Water quality testing
Food microbiology
Environmental microbiology
Sample conditioning
Reagent warming
Media preparation
Quality control testing
Educational laboratory instruction
General laboratory incubation
Its gentle heating characteristics make it particularly well suited for laboratories incubating samples where minimizing evaporation is important.
Ideal Laboratory Environments
The VWR 414005-128 is well suited for clinical laboratories, microbiology laboratories, food and beverage testing facilities, pharmaceutical quality control departments, environmental laboratories, educational institutions, biotechnology companies, and industrial research facilities performing routine incubation procedures.
Its compact benchtop design also makes it an excellent choice for satellite laboratories, teaching laboratories, or facilities that require a dependable secondary incubator without occupying significant floor space.
Laboratories utilizing biosafety cabinets, centrifuges, laboratory refrigerators, and other general laboratory equipment often incorporate gravity convection incubators into their workflow for routine microbiological and quality assurance applications.
Temperature Recovery and Environmental Stability
The VWR 414005-128 utilizes a precision gravity convection heating system designed to maintain stable chamber temperatures while minimizing sample dehydration. Heat rises naturally through the chamber, creating gentle air circulation without the turbulence associated with forced-air systems. This approach is especially beneficial for agar plates, open containers, and moisture-sensitive materials that may dry more rapidly in fan-assisted incubators.
The incubator operates over a temperature range of Ambient +8°C to 65°C, with ±0.3°C temperature fluctuation and ±0.1°C control sensitivity. A platinum PT100 temperature sensor continuously monitors chamber conditions, while the adaptive microprocessor controller automatically adjusts heater output to maintain stable temperatures throughout routine laboratory operation.
Gentle Gravity Convection Heating
The defining advantage of the VWR 414005-128 is its gravity convection design. Rather than actively circulating air with internal fans, the chamber relies on natural thermal movement to distribute heat evenly. This minimizes airflow over samples, helping reduce moisture loss while providing a stable environment for microbiological cultures, media, and other temperature-sensitive materials.
The tempered inner glass door allows users to inspect samples without exposing the chamber to unnecessary heat loss, while the adjustable ventilation port gives laboratories additional control over internal chamber conditions. Together with the stainless steel interior, programmable timer, digital LCD display, and built-in over-temperature protection, these features make the VWR 414005-128 an excellent general-purpose incubator for everyday laboratory use.
Sample Storage Recommendations
The 32-liter (1.1 cubic foot) chamber of the VWR 414005-128 is well suited for routine laboratory incubation involving agar plates, Petri dishes, culture tubes, reagent bottles, sample containers, microbiological media, and small laboratory glassware. The adjustable stainless steel shelves allow users to configure the chamber for a variety of sample heights while making efficient use of the available workspace.
Because gravity convection incubators rely on the natural movement of warm air rather than mechanical circulation, samples should be spaced to allow unrestricted airflow between shelves. Overloading the chamber or placing containers directly against the interior walls may reduce temperature uniformity and extend recovery times after door openings.
The tempered inner glass door allows users to visually inspect cultures without exposing the chamber to significant heat loss, helping maintain stable incubation conditions during routine laboratory observations.
Energy Efficiency and Operating Costs
Gravity convection incubators are often selected for their simplicity, reliability, and low operating costs. Without circulation fans or complex airflow systems, the VWR 414005-128 requires fewer moving components while providing dependable heating for routine laboratory applications.
Its compact benchtop footprint allows laboratories to add incubation capacity without sacrificing valuable workspace, while the insulated chamber and adaptive microprocessor controller help maintain stable temperatures with efficient heater operation. The programmable timer also allows laboratories to automate incubation cycles for recurring procedures, improving workflow while minimizing operator intervention.
Combined with its stainless steel interior, durable construction, and straightforward operating controls, the VWR 414005-128 offers an economical solution for laboratories performing daily microbiological and quality control testing.
Key Specifications
Specification
Details
Manufacturer
VWR
Model
414005-128
Incubator Type
Gravity Convection Incubator
Chamber Capacity
Approximately 32 L (1.1 cu. ft.)
Temperature Range
Ambient +8°C to 65°C
Heating Method
Gravity Convection
Temperature Control
±0.1°C
Temperature Fluctuation
±0.3°C
Temperature Sensor
PT100 Platinum RTD
Chamber Material
Stainless Steel
Interior Door
Tempered Glass
Shelves
Two Adjustable Stainless Steel Shelves
Ventilation
Adjustable Air Vent
Display
Digital LCD
Timer
Continuous or Programmable
Safety Features
Over-Temperature Protection
Interior Dimensions
Approximately 14.6" W × 14.2" D × 18.9" H
Exterior Dimensions
Approximately 20.5" W × 22.4" D × 27.6" H
Electrical Requirements
115 V
Approximate Weight
Approximately 65 lb
Specifications are believed to be accurate but may vary depending on factory-installed options. Please verify all specifications prior to purchase.
Frequently Asked Questions
Why would I choose a gravity convection incubator instead of a forced-air incubator?
Gravity convection incubators generate natural air circulation without fans, creating a gentler heating environment. This makes them an excellent choice for agar plates, microbiological cultures, powders, and other materials that can be affected by excessive airflow or evaporation.
Is the VWR 414005-128 intended for mammalian cell culture?
No. This model is designed as a general-purpose laboratory incubator rather than a CO₂ incubator. It is best suited for microbiology, quality control, sample conditioning, media warming, and other applications that do not require controlled carbon dioxide concentrations.
Does the incubator require a water pan for humidity?
No. Unlike CO₂ incubators that maintain elevated humidity for mammalian cell culture, gravity convection incubators typically operate under ambient humidity conditions. This simplifies maintenance while making the incubator well suited for routine laboratory procedures.
Can this incubator be used continuously?
Yes. The VWR 414005-128 is designed for continuous laboratory operation. The digital controller maintains stable temperatures over extended periods, while the programmable timer also allows users to perform timed incubation cycles when required.
Why is there a glass door inside the chamber?
The tempered inner glass door allows users to monitor cultures and samples without opening the main insulated door. This helps reduce temperature loss, shortens recovery times, and minimizes disturbances to ongoing incubation cycles.
What types of laboratories commonly use this incubator?
The VWR 414005-128 is frequently found in microbiology laboratories, hospital laboratories, pharmaceutical quality control departments, food and beverage testing facilities, environmental testing laboratories, water treatment laboratories, universities, and teaching laboratories.
Does gravity convection provide uniform temperatures?
Yes. Although recovery after door openings is generally slower than with forced-air systems, gravity convection provides excellent temperature uniformity for routine laboratory applications while minimizing airflow over sensitive samples.
Why purchase a refurbished VWR 414005-128 from American Instrument Exchange?
Purchasing a refurbished VWR 414005-128 Gravity Convection Incubator from American Instrument Exchange provides laboratories with a dependable, easy-to-operate incubation system at substantial savings compared with purchasing new equipment. Featuring natural gravity convection heating, digital microprocessor controls, a stainless steel chamber, tempered glass inner door, and precise temperature regulation, this incubator is an excellent solution for routine microbiology, quality control, and general laboratory incubation. Every incubator is inspected and tested prior to shipment and includes a 90-day warranty for added confidence.
CLICK HERE to see the VWR Gravity Convection 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.
