Direct Heat CO2 Incubator

160-Liter Capacity | Humidity (RH) Control | Oxygen (O2) Suppression | Dual Decontamination Cycles

The In-VitroCell NU-5741 is a direct heat CO2 featuring Humidity and Oxygen control. Relative Humidity (RH) is controlled through an RH sensor injecting water vapor from a reservoir water tank in place of a water pan to meet the setpoint. Hypoxic conditions are created through an O2 sensor injecting Nitrogen (N2) gas to meet setpoint. Model NU-5741 creates optimal growth conditions for samples prone to desiccation and needing hypoxic conditions.

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A Product to Meet Your Need

Model NU-5741 is available in two electrical configurations.






Quick Specs

Air Cleanliness (ISO 14644) ISO-Class-5
CO2 Accuracy ± 0.1%
CO2 Recovery Up to 5% ± 0.2% / -0.5 in 5 minutes Average
Control System NuTouch
Temperature Accuracy °C ± 0.1%
Temperature Control Direct Heat
Temperature Recovery 0.12°C/min. on Average
Temperature Uniformity °C ± 0.35°C @ 37°C
  • Features
  • Specs
  • Options & Accessories
  • Resources
  • Citations
CO2 Incubator Oxygen Control for Hypoxic Studies

Hypoxic Conditions

Oxygen Control

For more sensitive cells lines prone to stress and DNA damage, CO2 Incubator models featuring Oxygen control utilize an O2 sensor to monitor oxygen in the growth chamber. Nitrogen (N2) gas is injected to suppress oxygen to set point. An extensive O2 range applies to various research applications, including the brain, eyes, liver, heart, kidneys, and more.

CO2 Incubator Humidity (RH) Control

Reduce Cell Desiccation

Precise Humidity Control

Relative humidity levels up to 90% are achieved in the growth chamber through the use of a 3-liter reservoir external to the chamber. The chamber air is routed through the water vapor saturated the air in an evaporate box to add humidity when the RH sensor indicates more humidity is needed to meet set point.

CO2 Incubator Coved Interior Corners

Coved Interior Corners

NuAire CO2 incubators are designed to minimize potential hiding places for contamination. Coved corners and a crevice-free interior, which makes it easy to clean.

CO2 Incubator Decontamination Cycles

Dual Decontamination Cycles

The direct heat technology enables the use of a 145°C dry and 95°C humidified decontamination cycle that can be conveniently run overnight in just 8 hours without removing the CO2 or temperature sensors. The NuTouch control system steps the user through the process with on screen instructions and displays progress throughout each phase of the complete cycle.

CO2 Incubator HEPA Filtration

Closed Loop HEPA Filtration

Continual HEPA filtration of chamber air complements periodic high heat decontamination to provide Constant Contamination Control. InVitrocell’s design constantly takes a sample of air from the chamber, routes it through a HEPA filter in a compartment outside that inner chamber, and ultimately returns it to create an ISO Class 5 level of clean air in the interior as well as a slight positive pressure. Inside the InVitrocell, your cell cultures are protected by a multi-tiered defense against contamination.

The NuAire© Advantage

NuAire® utilizes an independent network of sales and service professionals offering our customers a vast array of knowledge and relationships. Our inside sales and service teams are the pride of the industry; some of which have been with NuAire® since the beginning in 1971. We work hard and diligently to make you happy. That is our mission, and that is why we come to work every day. Purchase a NuAire® and become part of our family.


Backed by the Industry's Best

  • 3 Years Parts & Labor, IR Sensor 5 Years Parts Only (United States and Canada)
  • Consult Local Distributor (Global)

Standard Features

  • Chamber Volume: 160L (5.65 Cu. Ft.)
  • NuTouch Electronic Control System
  • Decontamination Cycle: 145°C Dry, 90°C Humidified
  • Humidity Control: Reservoir, RH Sensor Controlled
  • O2 Control: Sensor (0.5 - 21%)
  • Closed Loop HEPA Filtration System
  • Leg Levelers
Est. Shipping Width Inches (mm)
Est. Shipping Height Inches (mm)
Est. Shipping Depth Inches (mm)
Access Port Location
Air Cleanliness (ISO 14644) ISO-Class-5
Chamber Air Circulation Method
Chamber Air Filter
Chamber Heater(s) Location
Chamber Jacket Technology
CO2 Accuracy ± 0.1%
CO2 Control Logic Fixed Algorithm/Manual, Environmental Adaptable
CO2 Display Resolution 0.1%
CO2 Range 0.1 to 20%, 5% Default Set Point
CO2 Recovery Up to 5% ± 0.2% / -0.5 in 5 minutes Average
CO2 Sensor Type Infrared (NDIR)
Control System NuTouch
Data Output Features
Door and Perimeter Heater Control Logic Base Duty Cycle set to chamber temperature Set-Point, Proportional 0-100% [manually adjustable
Electrical Configuration 115V50Hz, 230V5060Hz
Exterior Depth Inches (mm) 27.500 (699)
Exterior Door Seal
Exterior Height Inches (mm) 36.188 (894)
Exterior Material
Exterior Width Inches (mm) 25.500 (648)
Footprint Depth inches (mm) 20.825 (530)
Footprint Width inches (mm) 22.625 (575)
In-line Gas Filters
Segmented Doors
Inner Doors One
Interior Depth Inches (mm) 20.678 (525)
Interior Door Seal
Interior Height Inches (mm) 24.000 (610)
Interior Material
Interior Volume Cubic Feet (Liters) 5.65 (160)
Interior Width Inches (mm) 20.250 (514)
Net Weight lbs (kg) 220 lbs. / 100 kg.
O2 Accuracy ± 0.25%
O2 Control Logic Fixed algorithm/ manual environmental adaptable
O2 Display Resolution 0.1%
O2 Measuring Range
O2 Set Point Range 0.5 -21.0% (ambient) (21.0% Default)
O2 Recovery 5.0 ± 0.5% twenty minutes on Average
O2 Sensor Type Zirconia Ceramic
Power Cord Length Foot (Meter) 8 (2.5)
Remote Alarm Terminals
RH Accuracy ± 3%
RH Control Method
RH Control Logic Fixed algorithm/manual environmental adaptable
RH Control Range Ambient dependent to 90%
RH Display Resolution 0.1%
RH Evaporator Box Capacity
RH Recovery 90% +5%/-3% within 25 minutes on average
RH Sensor Type Precision capacitance bulk-polymer
RH Water Pan Capacity
Sample Port Location
Shelf Capacity lbs (kg)
Shelf Depth Inches (mm)
Shelf Material
Shelf Width Inches (mm)
Est. Shipping Weight lbs (kg)
Decontamination Cycle 95°C Humidified Decontamination, 145°C Dry Decontamination Cycle
Temperature Accuracy °C ± 0.1%
Temperature Control Direct Heat
Temperature Control Range 5°C above ambient (to a 30°C max ambient) to 55°C
Temperature Display Resolution 0.1°C
Temperature Recovery 0.12°C/min. on Average
Temperature Sensor Type Precision Integrated Circuit
Temperature Set-Point Range 5°C to 55°C (37.0°C Default)
Temperature Uniformity °C ± 0.35°C @ 37°C
Water Pan Depth
Water Pan Length Inches (mm)
Water Pan Width


NU-5741 NU-5741E
Electrical Configuration 115V60Hz 230V5060Hz


NU-5741 NU-5741E
Safety Certification [ "", "UL, UL-C" ] [ "", "UL, UL-C" ]


Copper Alloy Chamber 115V
Copper Alloy Chamber 230V
Stainless Steel Chamber 115V
Stainless Steel Chamber 230V

Inner Door

Sectioned Inner Door
Standard Glass Inner Door

Outer Door (Right Hinge Standard)

Left Side Door Hinge

Power Cord

Euro Power Cord Option Shipping Kit
UK Power Cord Option

NuAire Accessories

Please keep in mind parts and accessories are product and size specific, contact your sales representative for any clarity to your size questions.

In-VitroCell CO2 Incubator Product Brochure

Download the brochure

CO2 Incubator Direct Heat NU-5700 Family Specification

View the specification

In-VitroCell NU-5700 CO2 Incubator Product Flyer

View the flyer
Warranty NuAire Standard CO2 Incubator Warranty in United States and Canada

CO2 Incubator Standard Warranty for US and CA

View the warranty
White Paper

CO2 Incubator Buying Guide

Learn More
Video In-VitroCell CO2 Incubators IR Sensor

In-VitroCell CO2 Incubators IR Sensor

Watch the video
Video In-VitroCell CO2 Incubators from NuAire Lab Equipment

In-VitroCell CO2 Incubators from NuAire

Watch the video
Video CO2 incubator contamination control

In-VitroCell CO2 Incubators Constant Contamination Control

Watch the video
Video In-VitroCell CO2 Incubators Temperature Uniformity

In-VitroCell CO2 Incubators Temperature Uniformity

Watch the video
Video CO2 Incubator HEPA filtration

In-VitroCell CO2 Incubator Closed Loop HEPA Filtration

Watch the video
Video NuAire CO2 incubator control system video

In-VitroCell CO2 Incubators NuTouch Electronic Control System

Watch the video

NU-5700 CO2 Incubator Cut Sheet

View the drawing

NU-5700 CO2 Incubator Stacked Cut Sheet

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NU-5700 stacked on NU-5800 CO2 Incubator

View the drawing
Manuals OM0249 NU-5710/E through NU-5741/E CO2 Incubator Manual

OM0249 NU-5710/E through NU-5741/E CO2 Incubator Manual

Read the manual
Manuals Operation and maintenance manual for NU-5800 and NU-5800E Series 12 CO2 Incubator

OM0245 NU-5800 and NU-5800E Series 12 CO2 Incubator Manual

Read the manual
Manuals OM0245 CO2 Incubator Manual for models NU-5810, NU-5820, NU-5831, and NU-5841

OM0246 CO2 Incubator Manual for NU-5810/E through NU-5841/E

Read the manual



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