Reach in Plant Growth Chamber - E-22L

The E-22L Reach In Plant Growth Chamber made by Percival® Scientific gives you a convenient and flexible unit to manage experiments and research with seed and plant development. The E-22L provides two separate chambers that you can control individually or together, so you can manage separate projects at the same time. Some research applications include study of plant production, plant pathology, seed development, growing conditions and many more. Two IntellusUltra controllers give you computerized control over the interior environment in both chambers, allowing you to compare and contrast specifications and results in either environment. With specific environmental control inside a secure unit, many other applications outside horticulture also exist.

Download a PDF of this product – E-22L


*Specifications shown are per compartment


  • This chamber is frequently used for Alfalfa/forages, peanut, potato, bluegrass, short term plant growth and/or short plants
  • 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

  • Single lamp bank consists of energy efficient fluorescent lamps and incandescent lamps
  • Intensity programmable up to 680 micromoles/m2/sec of light irradiance measured at 6” from lamps
  • Programming and control of the lighting is done via IntellusUltra real time controller

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 5.4 sq.ft. provided on one tier


  • One tier of white epoxy coated steel wire shelving (each shelf is 27” x 28.8”)
  • Shelves are supported by shelf clips allowing 1/2” vertical adjustments
  • Maximum clearance between shelves is 20.2” per tier


  • 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

  • 7-44C (+/- 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
E-22L*7-44±0.5 °C14.6 ft3
0.4 m3
5.4 ft2
0.5 m2
20.2 in
51.3 cm
33.5 in (W)
36.6 in (D)
77.9 in (H)
680 µmol/m2/s2