The PHCbi MLR Plant Growth Chambers are the chosen solution to meet a variety of scientific applications. These climatic test chambers perform applications as follows.

Crop Physiology and Phenology: Study how diurnal temperature, humidity, and light variations impact crop physiology.
Growth chambers allow precise control of environmental conditions, enabling investigations into plant responses.
Topics include transpiration, flowering, and fruit development.

Suitable for a wide range of applications

Food Research and development of various food and food products such as rice, Spirulina, comparison of germination rates, chemical control methods for potatoes, edible seaweeds, genetic research on drought-resistant and insect-resistant crops, etc.
Plants Plant acclimatization and cultivation of cells and tissue. Evaluation of seedling resistance, sterilization effects of dry heat treatment of seeds, optimal temperature studies, chromatin immunoprecipitation using rotators (ChIP), and germplasm-related research.
Industry Biodiesel, short-term biomass storage, cyanobacteria and algae.
Bacterial Culture Bacterial culture tests using agar media, including E. coli culture, transformation, colony production, drug selection, and bacterial tests such as Vibrio parahaemolyticus.
Other We have been able to meet various experimental research needs such as toxic algae, contaminated water, contaminated soil and disease development tests, degradation tests of medicine, feed improvement, and others.

Programmable temperature function

  • 12-step programs x 10 patterns can be memorized.
  • Multiple programs can be linked (Join mode).
  • Selectable clock mode or timer mode
  • Starting day and time of operation can be programmed.

Light Setting

Plant growth chambers allow precise manipulation of light conditions. Researchers can study photodamage under controlled parameters:
- Light Intensity: Varying light levels to simulate different scenarios.
- Temperature: Investigating temperature-dependent responses.
Plant growth chambers facilitate reproducible experiments and advance our understanding of photodamage mechanisms.


Light intensity influences rice growth, and precise control of light conditions is essential for optimizing crop yield and quality.
Responses were compared to light intensity conditions from 17% to 100% to select candidates for manipulating rice seedling tolerance to low light stress. This can help to improve rice production in areas with continuous cloudy weather or rainfall.


Illumination program function suited for photomorphogenesis or photosynthesis research. Fifteen 40 W fluorescent tubes are mounted on the front, left,and right doors, providing illumination intensity in the range of 0 to 20,000 lx* (photon flux density 0–150 mol m-2 s-1), automatically adjusted to 6 levels. Operations can be programmed with up to 12 levels.

Temperature Setting

Crop Pathology and Disease Resistance:
-Study how temperature fluctuations affect pathogen growth and host resistance.
-Growth chambers allow precise inoculation and monitoring.

Control Panel


Pull-down, Pull-up Performance

Heat Load

Humidity Setting(MLR-352H model only)

A Day-Night Cycle for humidity can be set, so to optimize plant height,
leaf area, flowering and fruit development. High RH during nighttime may promote vegetative growth (taller plants, larger leaves).
Lower RH during daytime could enhance flowering and fruit setting.
Also, disease incidence may vary based on humidity levels.

Night time

Day time



Plant Name: Tomato (Solanum lycopersicum)
Experiment Duration:
Length: 60 days (approximately 2 months)
Lighting: 12-hour photoperiod (adjustable intensity).
Substrate: Soil or hydroponic system.

Day-Night Cycle:
Daytime: RH set to 70%, temperature at 25°C.
Nighttime: RH increased to 85%, temperature lowered to 18°C.

The MLR-352H model holds an ultrasound humidifier controlled by a PID controller,
making it able to control the humidity of an area of 60 — 90% RH (fluorescent light off).
Furthermore, it is able to humidify the chamber with the L-shaped humidifying pipe installed at the bottom of the chamber.

Note: No power outlet is provided inside the instrument in anticipation of high temperature and humidity.

Temperature uniformity 9 points measuring

The humidity control range

The temperature distribution [℃] is determined using 1/2H and center point [5] as the zero reference.

Model no. MLR Climatic Test Chamber
MLR Climatic Test Chamber (Humidity Control)
Capacity (L) 294 294
Temperature(℃) 0 ~ +50 (light OFF)±0.3℃*1
+10 ~ +50 (light ON)±0.3℃*1
+5 ~ +50 (light OFF)±0.3℃*1
+10 ~ +50 (light ON)±0.3℃*1
Light Control Range 0 ~ 20,000 lx (Adjustable) 0 ~ 20,000 lx (Adjustable)
Humidity Level - 60 – 90%RH (light OFF, +15 ~ +45℃)
55 – 85%RH (light ON, +15 ~ +45℃)
External Dimensions
(W mm x D mm x H mm)
W 760 x D 700 x H 1835 mm W 760 x D 700 x H 1835 mm
All three illuminated doors can be opened and closed for easy maintenance of the fluorescent lamps. The structure is designed to be impervious to outside light. allowing the use of most shakers, rotators, and stirrers

*1 Set temperature: 25 °C, ambient temperature: 20 °C, no load

Microprocessor PID and Refrigeration Capacity Control

Microprocessor PID and Refrigeration Capacity Control eliminate temperature fluctuations and thereby improve temperature control. This allows superior precision experiments plus energy and electricity savings.

Security & Alarm Systems

To protect experimental materials from any possible trouble, the system is equipped as standard with full safety protection and alarms, such as an automatic set temperature alarm, independent overtemperature/overcooling prevention alarm, program memory backup mechanism, and self diagnostic functions. 

A password protected Keylock to prevent unauthorized access

A keylock protected with a 4-digit password helps to prevent unauthorized access

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