Environmental chamber, stability test chamber

HCH20-Environmental test chambers/Humidified incubator/Constant climate chamber/stability testing chamber/stability storage chamber

Canden HCH20 is a versatile one door chamber that is used as Environmental stability test chambers/Humidified incubator, environmental testing chamber, environmental growth chamber/stability storage chamber due to its standard wide controlled temperature and humidity range.

Sensor Info–All units come with Rotronic hc2a-s model or equivalent

Fuji Controller spec.sheet.pdf
Watlow controller App Spec.Sheet pdf

HCH20- Environmental test chamber/stability test chamber

The HCH20 one door environmental test chambers/humidified incubator can maintain temperature from 0°C to 70°C with precision and relative humidity of 20% to 90% RH. This chamber is aptly used as an environmental testing , constant climate testing, shelf life testing, stability storage, stability testing & growth chamber due to its wide temperature and humidity range. Chamber exceeds ICH performance standards due to exceptional uniformity, thanks to the back wall plenum which ensures uniform distribution of conditioned air.

The environmental stability chamber/ temperature and humidity controlled test chamber is capable of maintaining a wide humidification rage of 20% to 90% using ultrasonic humidification method which eliminates hot spots within the chamber volume and ensures uniform humidity value. The humidity test chamber also comes with a small desiccant based dehumidifier which ensures the lower relative humidity set points are achieved without any need for dedicated compressed air line . 

The HCH20 environmental stability chamber model is one of the most competitively priced model without compromising construction, performance and safety features. This humidity and temperature controlled chamber is built to last for a long time with proper maintenance.


Also- The HCH2O model is a popular choice with pharmaceutical companies  The stability chambers meet International Conference on Harmonization (ICH) guidelines for drug substance and product storage testing. In the pharmaceutical industry, stability testing helps provide evidence as to how the quality of a drug will vary with time under a variety of environmental conditions including temperature, humidity, and light exposure. This stability testing must be completed before a drug enters the market.This Canden temp and humidity  environmental stability test chamber is ideal for drug stability studies, shelf-life testing for packaged products, and insect and other large-scale biological research.

  • Chambers feature 0°C to 70°c temperature range that can be set in 0.1°C increments.
  • Directed Airflow System distributes airflow uniformly throughout the chamber
  • Various options available to address specific needs for shelving, door, water system etc available.

 Typical chamber application includes

  • Ninhydrin testing

  • pharmaceutical stability testing 

  • Pharmaceutical stability storage

  • Cold storage 

  • Drywall (gypsum) stability testing

  • Cement curing testing

  • Product/packaging shelf life testing

  • environmental testing

  • environmental growth

  • Any scientific stability testing 

The environmental test chamber features all stainless steel interior and exterior construction with 2″ polyurethane CFC free insulation. 

Cabinet standard features

  • Stainless Steel Exterior & Interior

  • LED interior light

  • Recessed Door Handle

  • Door locks standard

  • Magnetic door gasket standard for positive door seal

  • Pre-Installed 4″casters with bumper brakes

  • Three (3) Pre-Installed shelves per section

  • Back wall plenum for even distribution of conditioned air

Chamber uses thermoelectric assembly for heating and cooling. This type of cooling/heating system completely eliminates need for conventional refrigeration system and failures due to mechanical components such as compressors thereby drastically increasing the life expectancy of each chamber. Maintenance cost is also lowered by the thermoelectric/Peltier driven heating/cooling system. The chamber is quiet  while in operation. Chamber temperature set points are tightly controlled using Fuji PX4 microprocessor based PID controller. Chamber comes with additive humidification via ultrasonic humidifier, humidity sensor and PID humidity controller which displays process and set value. All sensors are NIST traceable- optional certificate to be provided upon request at estimate.

Standard Temperature control features:

Controller model: FujiPX4

  • High brightness, LED display-easy to read from distance

  • Autotune capability

  • High/Low deviation alarms at controller

  • 2 programmable alarm

  • IP-65 Panel (front panel splash proof)

  • Visually interpret thermal data

  • *Note: We offer 2 controller models- Not all features may be available in one controller- Please refer to controller spec.sheet

Humidity control features:

    •  3 % uniformity over the entire input range

    • Displays both the set point and actual relative humidity

    • PID controller 

    • A fast response,  relative humidity sensor is included. It has high accuracy, high reliability, consistency

    • High/Low deviation alarms at controller

    • Autotune capability

    • High brightness, large LED display – easily read from distance.

Stability refrigerator/Laboratory refrigerator

Temperature range

0°C to 70°c

Temperature uniformity

± 0.7°C

Temperature control at sensor


Humidity range

20% to 90% as limited by operable dew point.

Sensor Info–All units come with Rotronic Hc2a-s model or equivalent

Control resolution


Cooling/Heating type

Thermoelectric/Peltier driven-for heating/Cooling

Chamber Volume in Cu. Ft

21.4 cu.ft

External Dimension-LXWXH

28″×31″×81″ (refer to drawing)

Internal Dimension-LXWXH

24″ x 27″ x 60″(refer to drawing)- height includes plenum which is 5″H.

Cabinet specs

Stainless interior and exterior construction



Electrical requirement

115V/60hz/1ph/10a, Unit plugs into standard wall outlet.

Shelf quantity, type

3 per chamber/ additional shelves available, wire shelf- PVC coated 

Weight specs

Chamber weight-210 Llbs

Shipping weight- 254 Lbs

Note: Final finished product(chambers) may vary due to different options than what is shown in pictures. Canden products company reserves right to make changes without notice.