VWR Symphony 1.4A Model 3405 CO₂ Incubator

VWR Symphony 1.4A Model 3405 CO₂ Incubator

The VWR Symphony 1.4A Model 3405 CO₂ Incubator is a compact air-jacketed cell culture incubator designed for laboratories with limited space, lower culture volumes, or applications where dedicated personal incubation space is desirable. With a 1.4 cu. ft. (approximately 40 L) stainless steel chamber, 0–20% CO₂ control range, radiant-wall heating, thermal conductivity CO₂ sensing, and passive humidification, the Symphony 1.4A provides the essential environmental controls required for routine mammalian cell culture in an unusually compact benchtop footprint.

Available used and refurbished from American Instrument Exchange, the VWR Symphony 1.4A is particularly well suited for academic research laboratories, biotechnology startups, individual research groups, and facilities that want to isolate specific cultures or projects rather than place everything in a large shared incubator. At only approximately 18.5 inches wide, the Model 3405 can provide dedicated CO₂ incubation capability in laboratories where bench space is at a premium.

Key Features

• Compact 1.4 cu. ft. (approximately 40 L) culture chamber

• Air-jacketed radiant-wall heating

• Temperature range from ambient +5°C to 60°C

• Approximately ±0.4°C temperature uniformity at 37°C

• 0–20% CO₂ control range

• Thermal conductivity CO₂ sensor

• Better than ±0.1% CO₂ control under specified conditions

• Passive humidification up to approximately 95% RH at 37°C

• 1.5-gallon removable humidity pan

• Seamless Type 304 stainless steel interior

• Four stainless steel perforated shelves

• Filtered chamber access port

• User-programmable temperature and CO₂ alarms

• Automatic CO₂ shutoff when the inner door is opened

• Compact 18.5"W × 23.5"D footprint

• 120V, 60 Hz electrical configuration

• Professionally inspected and tested by American Instrument Exchange

• 90-day warranty included

VWR Symphony 1.4A CO₂ Incubator Overview

The VWR Symphony 1.4A was designed around a different laboratory need than a conventional 5- to 7-cu.-ft. CO₂ incubator. Rather than maximizing chamber capacity, the Model 3405 provides the essential conditions for cell culture within a small 40 L chamber that can be dedicated to an individual researcher, cell line, experiment, or laboratory group.

This can be valuable in shared cell culture facilities. A laboratory may not always want every culture placed inside the same large incubator, particularly when different projects require different CO₂ concentrations, temperature settings, or access schedules. A compact personal CO₂ incubator provides another option without consuming the floor or bench space required by a full-size unit.

The Model 3405 uses an air-jacketed radiant-wall heating system. Heating elements surrounding the chamber warm its surfaces, creating an evenly heated incubation environment without the large volume of water associated with traditional water-jacketed CO₂ incubators.

The chamber itself is constructed from seamless Type 304 stainless steel with coved corners and minimized internal surfaces. This relatively simple interior geometry makes routine cleaning easier and reduces areas where spills or residue can accumulate.

Four perforated stainless steel shelves are supplied with the 1.4A, allowing researchers to make efficient use of the compact chamber while maintaining circulation around culture vessels.

Common Applications

The VWR Symphony 1.4A is well suited for mammalian cell culture, tissue culture, cancer research, immunology, biotechnology, pharmaceutical research, academic research, stem cell research, and other applications requiring controlled temperature, CO₂, and elevated humidity.

Its small chamber makes it especially attractive for laboratories with modest culture throughput. A research group that only maintains a limited number of flasks or plates may not need the capacity or footprint of a conventional full-size CO₂ incubator.

The compact format can also be useful as a secondary or dedicated incubator. Laboratories may use a smaller chamber to segregate particular cell lines, reserve incubation space for an individual project, establish different environmental conditions from a primary incubator, or provide additional capacity during periods of increased workload.

Cell culture laboratories may use the Symphony 1.4A alongside biosafety cabinets for aseptic culture handling and laboratory centrifuges for harvesting and processing cells. Laboratory refrigerators provide storage for media and reagents, while ultra-low temperature freezers support longer-term preservation of cell stocks and other biological materials.

Cell Types & Culture Recommendations

The VWR Symphony 1.4A provides the controlled temperature, CO₂ concentration, and humidified environment required for a broad range of conventional cell culture procedures. Its primary limitation compared with larger incubators is capacity rather than basic culture capability.

Common Cell Types

• Mammalian cell lines

• Primary cells

• Fibroblasts

• Epithelial cells

• Cancer cell lines

• Immune cells

• Hybridoma cultures

• Stem and progenitor cell cultures

• Common biotechnology and pharmaceutical research cell lines

Typical Culture Vessels

• T-flasks

• Multiwell plates

• Cell culture dishes

• Petri dishes

• Small culture bottles

• Culture tubes

• Microplates

• Other vessels compatible with the 40 L chamber

The chamber measures approximately 12"W × 14"D × 14"H, so vessel size and shelf configuration should be considered when planning culture loads. Four shelves provide approximately 4.32 sq. ft. of total available shelf surface.

For laboratories with relatively small culture volumes, this compact configuration can actually be advantageous. Researchers can dedicate the entire chamber to a limited number of cultures rather than repeatedly accessing a larger shared incubator.

Environmental Control & Cell Culture Stability

The VWR Symphony 1.4A combines air-jacketed heating, thermal conductivity CO₂ sensing, passive humidification, and programmable alarms to maintain the environmental conditions required for routine cell culture.

Temperature can be controlled from approximately 5°C above ambient to 60°C, with published temperature control of ±0.1°C and uniformity of approximately ±0.4°C at 37°C. Radiant-wall heating distributes heat through the chamber surfaces, supporting even temperature conditions and recovery following routine door openings.

CO₂ concentration is adjustable from 0% to 20%. Importantly for this older-generation incubator, the Model 1.4A uses a thermal conductivity (TC) CO₂ sensor, rather than the infrared sensing technology commonly found in newer CO₂ incubators.

The TC system provides CO₂ control better than approximately ±0.1% under specified operating conditions. When the inner glass door is opened, automatic gas shutoff stops CO₂ injection to prevent unnecessary gas consumption. Once the chamber is closed, the control system can restore the selected atmosphere.

Humidity is generated passively using a 1.5-gallon removable water pan. Published specifications indicate relative humidity up to approximately 95% at 37°C under appropriate operating conditions. The humidified environment helps reduce evaporation from cell culture media during extended incubation.

Unlike an environmental chamber with active humidity regulation, however, the Symphony 1.4A does not allow the operator to select and precisely regulate a specific RH setpoint.

User-programmable high and low tracking alarms provide additional protection for both temperature and CO₂. Alarm contacts also provide notification capability for power interruption and deviations in chamber temperature or CO₂.

A filtered 1.3-inch access port provides a pathway for compatible monitoring probes or experimental connections without requiring the chamber door to remain open.

For laboratories that need conventional cell culture conditions without the capacity of a full-size incubator, the combination of 40 L capacity, air-jacketed heating, 0–20% CO₂ control, high humidity, and an exceptionally small footprint gives the Symphony 1.4A a very clear purpose.

VWR Symphony 1.4A Model 3405 Specifications

Specifications are based on period documentation for the VWR Symphony 1.4A platform and the individual Model 3405 configuration. Confirm CO₂ controls, shelving, electrical requirements, humidity pan, access-port components, and included accessories for the individual incubator before purchase.

VWR Symphony 1.4A Frequently Asked Questions

What makes the VWR Symphony 1.4A different from a full-size CO₂ incubator?

The primary difference is size. The Symphony 1.4A provides only 1.4 cu. ft. (approximately 40 L) of chamber capacity, compared with roughly 5–7 cu. ft. for many standard CO₂ incubators. It provides conventional temperature, CO₂, and humidification capabilities in a much smaller footprint.

Is the VWR Symphony 1.4A suitable for mammalian cell culture?

Yes. The 1.4A was designed specifically as a compact CO₂ cell culture incubator. Its controlled temperature, 0–20% CO₂ range, and humidified chamber support conventional mammalian cell and tissue culture applications.

What type of CO₂ sensor does the VWR Symphony 1.4A use?

This generation uses a thermal conductivity CO₂ sensor. This is an important distinction from newer incubators that commonly use infrared CO₂ sensing and keeps the description technically appropriate to the older Model 3405.

Why would a laboratory choose such a small CO₂ incubator?

A compact CO₂ incubator can be useful for individual researchers, low-throughput cell culture, small laboratories, dedicated cell lines, secondary incubation capacity, and space-constrained work areas. Its small chamber gives laboratories a way to establish dedicated culture space without the footprint of a conventional full-size CO₂ incubator.

How is humidity generated in the VWR Symphony 1.4A?

A removable 1.5-gallon water pan provides passive humidification through evaporation. Under appropriate conditions, chamber humidity can reach approximately 95% RH at 37°C. The incubator does not actively regulate a selectable relative-humidity setpoint.

How many shelves does the VWR 1.4A include?

The 1.4A platform uses four perforated stainless steel shelves, providing approximately 4.32 sq. ft. of total shelf surface within the compact chamber.

Is this VWR Symphony 1.4A refurbished?

Used VWR Symphony CO₂ incubators offered by American Instrument Exchange are inspected, cleaned, and tested prior to shipment. Temperature and CO₂ performance are evaluated to verify chamber conditions and the accuracy of the controls and readouts. Heating, CO₂ delivery, the thermal conductivity sensor, alarms, door functions, and other installed components are tested as applicable. Refurbished equipment includes a 90-day warranty.

Click Here to see the VWR Symphony 1.4A CO2 Incubator on the American Instrument Exchange YouTube channel.