Reach in Plant Growth Chambers

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REACH-IN PLANT

GROWTH CHAMBER MODEL NO. - ACM- 0145P

TECHNOLOGIES PVT. LTD.

Weiber Plant Growth Chambers are designed to study the effect of described different environmental factors such

as humidity, temperature and light in various application tests on the growth of plants.

Plant growth and geographic distribution are greatly affected by the environment. If any environmental factor is less

than ideal, it limits a plant's growth and/or distribution. For example, only plants adapted to limited amounts of water

can live in deserts.

Either directly or indirectly, most plant problems are caused by environmental stress. In some cases, poor

environmental conditions (e.g., too little water) damage a plant directly. In other cases, environmental stress

weakens a plant and makes it more susceptible to disease or insect attack.

REACH-IN PLANT GROWTH CHAMBERS

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Ÿ Temperature: is a measure of the intensity of heat. Plant growth occurs in a fairly narrow range - 60 - 100

degrees F. Temperature directly affects the processes of photosynthesis, respiration transpiration and

absorption of water and nutrients.

Ÿ Moisture supply: Plant growth is restricted by low and high levels of soil moisture as good soil moisture

improves nutrient uptake. If moisture is a limiting factor fertilizer is not used efficiently.

Ÿ Radiant energy: quality, intensity and duration (photoperiodism) of light are important for the plant growth.

Photoperiodism is defined as the behavior of plant in relation to length of the day. On the basis of day period the

plants can be:

1. Long day plants – Flowering occur only if days are longer than same critical period - 12 hours e.g. Grains and

clovers

2. Short day plants – flowering occur only if days are shorter than critical period e.g. soybeans.

3. Indeterminate – flowering occur over a wide range of day lengths. E.g. Tomato, cotton,buckwheat

Ÿ Composition of the atmosphere: plant growth majorly depends on the amounts of gases present in the

atmosphere such as carbon dioxide, nitrogen etc.

Ÿ Soil aeration and soil structure: Compact soils of high bulk density and poor structure are aerated poorly.

Pore space is occupied by air and water so the amount of air and water are inversely proportional to the amount

of oxygen in the soil. On well drained soils, oxygen content is not likely to be limiting to plant growth.

ENVIRONMENTAL FACTORS THAT AFFECT PLANT GROWTH INCLUDE

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Chamber body: Double walled heated and convection unit, with the outer rust proofing wall made up powder

coated PCRC sheets and inner wall made up of stainless steel of grade 304.

Insulation: is a method of retardation for the flow of heat, this process reduce the heat loss or gain for energy

conservation thus saving the energy. Weiber thermal shock chamber provides insulation either through fibrous

insulation i.e. mineral glass wool or through cellular insulation i.e. polyurethane foam (PUF).

CONSTRUCTION

With a basic understanding of these factors, one (researcher/student) may be able to manipulate plants to meet

required needs, whether for increased leaf, flower, or fruit production. By recognizing the roles of these factors,

personnel also will be better able to diagnose plant problems caused by environmental stress.

Fibrous Insulation: Composed of air finely divided into interstices by small diameter fibers usually chemically or

mechanically bonded and formed into boards, blankets, and hollow cylinders.

Cellular Insulation: Composed of air or some other gas contained within a foam of stable small bubbles and

formed into boards, blankets, or hollow cylinders.

Heating: Desired positive temperature is provided through stainless steel sheathed air heaters, these heaters do

not affect the test specimen directly as they are placed in conditioning plenum proving indirect heat.

Air Circulation: Air circulation efficient motor fans are provided, ensuring uniform temperature throughout the

chamber.

Cooling: Negative temperature is maintained through ultra low temperature application compressor and non CFC

eco friendly R 404a refrigerant used.

Refrigeration: It is provided through hermetic and half-hermetic compressor cascade refrigeration system.

Hermetic compressor is completely sealed, especially against the escape or entry of air and semi-hermetic

compressor is partially sealed units and these units are mainly utilizes for real refrigeration work.

SALIENT FEATURES

Ÿ Reliable

Ÿ Aesthetically designed.

Ÿ Corrosion Resistant

Ÿ Energy Efficient

Ÿ CFC free cooling

Ÿ RS 232C interface

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APPLICATIONS

Ÿ Production of biotherapeutic proteins

Ÿ Germplasm containments

Temperature Range5 Degree to 50 degree Centigrade (without irradiation) and 10 Degree to 50 Degree Centigrade (with irradiation)

Temperature Sensor PT 100

Co2 range 300-5,000 ppm

Co2 SensorNon dispersive infrared (NDIR) gas sensors, it is a highly integrated analysis system for monitoring respiratory carbon dioxide concentration.

Humidit 20% to 80% relative humidity

Temperature ControlThe temperature is efficiently controlled by PLC based HMI interactive control panel

Ÿ Biotechnology

Ÿ Agriculture

Ÿ Tissue Culture Applications

Ÿ Enzyme reaction applications

Ÿ Fermentation analysis

TECHNICAL SPECIFICATION

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Reach in Plant Growth Chambers

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