Forma Environmental Chambers . 11 Cu. Ft., 0-60C

Forma Environmental Chambers . 11 Cu. Ft., 0-60C


Forma™ Environmental Chambers

11 Cu. Ft., 0-60C

Manufacturer: ThermoFisher Scientific

Product code: 3911

SKU: EA-5740-89


Forma Environmental Chambers . 11 Cu. Ft., 0-60C

Thermo Scientific™ Forma™ environmental chambers perform a variety of applications, which can be configured for a variety of purposes and are available in multiple capacities. With a wide range of accessories and years of experience in constructing cabinets, we can construct units to match your most stringent applications.

Forma Environmental Chambers . 11 Cu. Ft., 0-60C

Broad Range of Features and Controls:

  • Wide temperature range of 0° to 60°C that enhances the flexibility of the unit
  • Relative humidity control via steam generator from above ambient to 95% at 37°C (not available w/Cat. No. 3920)
  • Sophisticated digital controls
  • Programmable ramp and soak cycles for temperature and RH†
  • Durable cabinets with true laminar airflow through side plenums for extremely tight uniformity
  • Phenolic-coated evaporator for use in applications that create corrosive byproducts
  • Manual control of defrost and refrigeration cycles
  • Visible/audible safety alarms alert to over- and under temperature conditions, deviation of humidity from set parameters (except Model 3920)

Durable Construction:

  • Cold-rolled steel, powder-coated cabinet
  • 2 in. (5.1cm) thick, CFC-free, foamed-in-place polyurethane insulation
  • Stainless-steel interior with solid stainless-steel adjustable shelves
  • Directed horizontal airflow system for excellent uniformity
  • Locking swivel casters for easy mobility during installation and cleaning
  • Leveling feet for stability and added safety in the lab

Broad Range of Options:

  • Interior lighting for Models 3920, 3940 and 3949 (Optional)
  • Reinforced shelving and flooring for heavy loads
  • Heatless dryer for lower humidity levels
  • Access ports for probes, sensors
  • Interior convenience receptacles
  • CO2 (IR sensor)
  • 6 in. and 12 in. temperature chart recorder
  • Other custom options available

Compatible with:

  • Recorders 
  • Reach-In/Environmental Chamber Solid Stainless-steel Shelf 
  • Reach-In/Environmental Chamber Perforated Stainless-steel Shelf 
  • Reinforced Stainless-steel Shelf 
  • Fixed Reinforced Stainless-steel Shelf for two shakers
  • Stainless-steel Door Glass Cover, factory installed


Lighting Optional Interior Lighting
Type Environmental Chamber
Capacity (English) 11 cu. ft.
Certifications/Compliance ICH, FDA, TAPPI, ASTM™
Amperage 15 A
Depth (English) Interior 27 in.
Depth (English) 32 in.
Depth (Metric) 81.3 cm
Depth (Metric) Interior 68.6 cm
Capacity (Metric) 311.5 L
Chamber Material Stainless Steel
Dimensions (D x W x H) Interior 27 x 31 x 24 in. (68.6 x 78.7 x 60.9 cm)
Temperature Range (Metric) 0°C to 60°C
Material Powder-coated Cold Rolled Steel
Display Digital Dual LED
Electrical Requirements 208/220 V, 60 Hz
Frequency 60 Hz
Height (English) 51.5 in.
Height (English) Interior 24 in.
Height (Metric) 130.8 cm
Height (Metric) Interior 60.9 cm
Humidity Control Microprocessor, PID
Humidity Display Digital, dual LED (direct set and read in % RH)
Humidity Accuracy ±5.0%
Humidity Resolution 0.01
Humidity Sensor Bulk polymer
Humidity Source Steam generator; initial fill approx. 1 qt. (1L)
Input Water Pressure Water Inlet Gravity to 40psi
No. of Shelves 3 supplied/11 max.
Programmability Temperature ramp and soak, up to 24 steps
Refrigerant CFC-free, R134A
Temperature Accuracy ±0.1 at 25° to 37°C
Temperature Resolution 0.1°C
Temperature Sensor RTD
Temperature Uniformity ±0.3 at 25° to 37°C
Voltage 208/220 V
Water Consumption 0.25 gal./hr. input water volume
Water Resistivity 50kilohm to 1megohm resistance
Width (English) 38 in.
Width (English) Interior 31 in.
Width (Metric) 96.5 cm
Width (Metric) Interior 78.7 cm
Unit Size Each
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