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Labs and research facilities seeking a small, efficient and highly reliable direct-heat CO2 incubator will find everything they need in the In-VitroCell™ CO2 incubator model NU-5731. This incubator creates a clean-air hypoxic environment by injecting nitrogen into the growth chamber, which suppresses oxygen. This makes the NU-5731 a perfect unit for age-related research and studies.
Using the rigorous standards of an ISO Class 5 clean room as a model, this CO2 incubator holds chamber conditions using slight positive pressure, preventing contaminated room air from invading the growth chamber. The use of a continuously running air pump pulls a chamber sample, then circulates it through the 99.99 percent efficient HEPA filter, where it is passed through sensors that take measurements of the CO2 and Oxygen levels (percentages), allowing accurate chamber monitoring. The system will make automatic adjustments if needed by injecting CO2, Nitrogen, or air to meet setpoint. Gas and air will pass through 99.99% HEPA filters before entering the growth chamber.
Rounded, crevice-free corners within the growth chamber eliminate hidden contaminants. Sterility of the chamber can be maintained by using one of two sterilization cycles (running at 95° C humidified or 145° C dry).
The 5x7-inch 127x178 mm color touch screen makes viewing control system parameters comfortable and convenient. The user-friendly interface, also available in English, Spanish, French and German, allows system parameter control with the touch of a finger. Updating set points and accessing data such as carbon dioxide levels or temperature history graphs are straightforward. A USB port allows for the downloading of data. Any tasks the unit is performing, such as making chamber adjustments, sampling air or idling in standby mode, is displayed clearly on the screen.
The accuracy of gas control is at the forefront of all NuAire's direct-heat CO2 incubators. The clean-air hypoxic environment is maintained through injection of nitrogen into the chamber, suppressing oxygen levels and meeting set points within a range of 0.5-21 percent, accurate with ±0.25 percent. A single-source dual-wave infrared (IR) sensor within the incubator's sensor bay maintains proper gas levels by monitoring and adjusting CO2 concentrations in the chamber.
Temperature control and uniformity are key in growing successful samples. NuAire's direct-heat CO2 incubators feature highly reliable foil heating elements that are wrapped in R5 insulation. These elements surround the growth chamber, creating an evenly dispersed source of heat. The dual temperature sensor probes regularly relay chamber temperature data to the ECS, automatically making any needed adjustments. The NU-5731 maintains a uniform chamber temperature accurate to within ±0.3° C.
The NU-5731 is incredibly efficient at heat and gas recovery after door openings, with some of the fastest and most effective times in the industry.
A relative humidity level up to 95 percent is achieved in the chamber via a stainless steel pan filled with distilled or mineral-free water and located in the bottom of the chamber.
NU-5731: 115V, 50/60Hz
NU-5731E: 230V, 50/60Hz
|Quality Assurance||UL, UL-C, CE|
|Exterior Dimensions (W x D x H)||
25.5 x 27.5 x 36.188 in
648 x 699 x 894 mm
|Foot Print (W x D)||
22.625 x 20.825in
575 x 530 mm
|Interior Dimensions (W x D x H)||
20.25 x 20.678 x 24 in
514 x 525 x 610 mm
|Shelf Dimensions (W x D)||
18 x 18.75 in
457 x 476 mm
|Shelves Supplied (Standard)||Quantity 4|
|Maximum Shelf Capacity||
|Maximum Weight Capacity||
25 lbs (11.34 kg) per shelf
125 lbs (56.7 kg) per incubator
|Water Pan Dimensions (W x D x H)||
10 x 1.5 x 12 in
254 x 38 x 305 mm
|Water Pan Capacity||
2 Liters (Maximum)
1.5 Liters (Recommened Fill)
5°C to 55°C (37°C default) (5°C above ambient to 30°C maximum ambient)
|Set-Point Range:||5°C to 55°C (37.0 Default)|
|Uniformity:||±0.3°C @ 37°C|
|Recovery:||0.12°C/min. on Average|
|Door and Perimeter Heater Control Logic:||Proportional base duty cycle based on Temperature set point and -20 to +20% manually adjustable to adapt to ambient conditions.|
|Temperature Sensor Type:||Precision Integrated Circuit|
CO2 Control Standard
0.1 to 20% (default 5%). (0.0 set point idles system)
|CO2 Recovery:||Up to 5% ±0.2% / -0.5 in 5 minutes Average|
|CO2 Display Resolution:||0.1%|
|CO2 Control Logic:||Fixed Algorithm/Manual, Environmental Adaptable|
|CO2 Sensor Type:||Infrared single source dual wave length|
Oxygen Display and Control
0 to 25%
|O2 Set-Point Range||0.5 to 21%|
|Default Set Point||21%|
|O2 Recovery:||5% ±2%: 15 minutes on average|