Plant Growth Chambers


Plant Growth Chambers – PG Series

Darwin Chambers PG Series, Plant Growth Chambers are a stock design with a variety of customizable options. They are quiet, easy to clean, highly reliable and ideal for plant growth use. They offer hot gas bypass control of refrigeration and resistance to heat, to facilitate reliable, temperature and humidity control.

  Our standard reach-in is flexible enough to be redesigned as a bench-top, double door, or triple door upright. However, our popular PG034 (shown below) can be modified with slight dimension changes if need be.


The PG034 is a single-door incubator providing extra cubic feet designed for maximum capacity while still allowing passage through most commercial doorways.

View Product


The PG068 is a wide double door plant growth chamber. This chamber gives researchers additional growing room for their plants.

View Product


PG Series

The PG series chambers feature hot gas by-pass technology which controls the temperature of the epoxy coated evaporator for greater uniformity. Compressors in our PG series of environmental chambers come with a three year warranty - which is the longest in the industry.

Superior Control and Uniformity

The ultrasonic humidification system provides excellent humidity control and avoids hot spots seen during chamber mapping of steam boiler equipped chambers. Standard control at the sensor in these chambers is ±0.2°C and ±0.3%RH.

Widely Proven, Non-Proprietary Controllers

Standard controllers for the PG Series are manufactured by Fuji Electric and are ideal for chambers. Unlike many proprietary controllers, this controller is commercially available and proven in tens of thousands of installations. Standard functions include: autotuning, fuzzy logic, PID control, programmable alarms, calibration capability, offset capability, etc. A touchscreen control interface is optional. Other controller manufacturers are also supported (Watlow, Allen Bradley etc.)

Greatly Reduced Direct and Indirect Energy Loads

The PG Series chambers utilizes less energy than comparable chambers and introduce less impact upon building cooling systems. This efficiency “dual benefit” allows our chambers to be located in spaces unsuitable for other chambers. Electrical energy savings by the PG series vs. steam boiler equipped chambers can easily amount to hundreds or thousands of dollars saved per year.

Services and Warranties

We offer free technical support throughout the lifetime of your chamber. In addition to standard warranties, we also offer extended warranties for cooling components, parts and labor. We also provide preventive maintenance services at an additional cost. Please ask for a quote.

Quiet Operation

The PG chambers utilize quiet and highly efficient DC fans. Locating these chambers in laboratory workspaces is a viable option.

Widely used options for plant growth chambers

  • LED lighting
  • T5HO bulbs
  • T8HO bulbs
  • Touchscreen controller (controls 3 outputs)