Percival Scientific Incubator - I-22L

Control temperature, humidity, CO2 levels and light events within two separate environments at the same time. The I-22L incubator provides two separate environmental chambers within the same self-contained unit, allowing for more storage and more functionality, without taking up more space. The two chambers may be used for separate, related or unrelated functions, while maintaining a stable and controlled environment within each.

The I-22L is accessible, convenient and easy to use, while providing the sophisticated controls needed to maintain a delicate environment.  With standard environmental controls and lighting intensity controls, the I-22L is ideal for a wide range of applications including bacteria cultures, seed germination, drosophilia cultivation, product testing and more.  Each compartment provides plenty of space for multiple samples with easy organization within each. Optional features and customization of the panel and controls allows you to build a unit with the exact specifications you need.

See the standard specifications and the additional features available to learn more about the I-22L environment chamber.  To learn more and for ordering information, click or call Geneva Scientific.

*Shown with options not included on standard chambers

Download a PDF of this product – I-22L



  • This chamber is frequently used for C. elegans, nematodes, yeast/fungi, insects, bacteria and BOD
  • Many other applications exist for this product

Percival’s IntellusUltra Controller

  • Percival Scientific has built a reputation of providing flexible, customized options for research scientists around the world. We have taken the philosophy to the next level with our improved IntellusUltra Controller. Now choose from the levels of functionality that meet your needs.

Lighting System

  • Linear LEDs mounted in pairs horizontally above shelves
  • Intensity programmable up to 120 micromoles/m2/sec of light irradiance measured at 6” from LED tiles
  • Programming and control of the lighting is done via IntellusUltra controller
  • Dimmable between 5-100% output

Cabinet Construction

  • Interior constructed of 22-gauge electro-zinc plated steel
  • Exterior constructed of 18-gauge electro-zinc plated steel
  • Welded seams and joints on outer and inner shells
  • Inner shell supported by non-compressing/non-thermal conducting material locking inner liner in place without a metal-to-metal bond to outer case
  • Chamber is completely self-contained
  • Overall wall thickness is 2”


  • Woodless construction using CFC free insulation (overall wall thickness is 2”, ample insulation for maintenance of stated temperature range)


  • Each door opening is 29.2” x 27.5” provides full access to chamber interior (magnetic gasket provides a tight seal to door frame)

Interior Space

  • 14.6 cu.ft. with work area of 10.8 sq.ft. provided on two tiers


  • Two tiers of white epoxy coated steel wire shelving (each shelf is 28.25” x 27”)
  • Shelves are supported by shelf clips allowing 1/2” vertical adjustments
  • Maximum clearance between shelves is 10” per tier with both shelves installed


  • Interior and exterior painted with high reflective, environmentally friendly, high temperature baked white powder coating


  • Self-contained air-cooled condensing unit with hot gas bypass system for continuous compressor operation, extended life and close temperature control (this continuous running condensing unit ensures precise temperature control by alternating cycling refrigerant and hot gas to coil; this also prolongs life of compressor, and eliminates risk of ice build up in coil)
  • Solenoid valves have extended stem for quiet and long life operation

Temperature Range

  • 4-44C (+/- 0.5C) with lights on, 2-44C (+/- 0.5C) with lights off

Temperature Safety Limit Controls

  • Experiment Protection: Adjustable high and low temperature controls, audible alarms, and visual indicators provided
  • Controls shut down all power to chamber, activating alarms (when the temperature returns to the normal range the system will automatically reset)

Electrical Requirements

  • Consult Geneva Scientific for electrical requirements and amperage draw.


  • Additive Humidity Control with Sensor
  • Dehumidifier with Sensor
  • IntellusUltra Connect
  • Android-Based Touch Screen
  • CO2 Enrichment Package
  • Self-Contained Water-Cooled Condensing Unit
  • Dry Alarm Contacts
  • Dimmable Lighting
  • LED Lighting in Lieu of Fluorescent Lamps
  • Please contact us for more optional items

***Specifications subject to change.***

ModelTemp Range
(with lights on)
Interior Space (Volume)Total Shelving Floor AreaMaximum Growing HeightExterior DimensionsLight Intensity (6" from lamps unless noted)# of Tiers
I-22L4-44±0.5 °C14.6* ft3
0.4* m3
10.8* ft2
1.0* m2
10 in
25.4 cm
33.5 in (W)
36.6 in (D)
77.9 in (H)
120 µmol/m2/s2*

Note: * Specifications for the I-22’s are per compartment unless otherwise noted. All of the I-22’s can be designed to have two different foot prints in one chamber. (I.e. I-22 with NL on top and L on the bottom.)