A Choice of Environmental Chambers to Meet Your Specific Needs.

Product Selection

Model Capacity Electrical
3960 29 cu. ft., 821.2L 115V 50/60Hz
3961 29 cu. ft., 821.2L 200/230V 50/60Hz


  • Perform many clinical applications, including elevated temperature stability and shelf-life testing with Thermo Scientific Forma 3960 Series Environmental Chambers.
  • These chambers feature a horizontal laminar airflow system, stainless-steel interior and microprocessor controls for a high-performance, high-capacity unit.


  • True laminar airflow through side plenums for extremely tight temperature uniformity.
  • Sophisticated microprocessor controls for constant display of temperature.
  • Alphanumeric message center for ease of setup and programming.
  • Access ports, locking casters and alarm contacts.
  • Capacity: 29 cu. ft. (821.2L) for high volumes and a broad range of products.
  • Operating temperature range: 5°C above ambient to 60°C (140°F).

Airflow System:

  • Directed airflow system promotes an ideal growth environment.
  • Positive pressure feed plenum and negative pressure return plenum direct air across surface of each solid shelf.
  • Feed plenum cannot be blocked by chamber contents.

Intuitive, Powerful Enviro-Scan Control:

  • Unit offers precise control without complicated programming.
  • Operating modes include Run, Setpoint, Calibration and System Configuration.
  • Easy-to-read display offers convenient, continuous monitoring.
  • Audible/visual under- and over-temperature alarms offer peace of mind.
  • Data outputs allow connection to in-house monitor/alarm system to track chamber conditions.

Durable Construction:

  • Exterior cabinet: 18-gauge. cold-rolled steel, powder coated for durability; resists scratches and chipping.
  • Heated glass door for minimal condensation and a clear view.
  • 2" (5.1cm) thick fiberglass cabinet insulation for maximum product thermal protection.
  • Solid, stainless-steel interior for long life and minimized equipment costs.
  • Five heavy-duty, solid stainless-steel shelves, adjustable on 2" (5.1cm) centers.
  • Swivel locking casters for easy mobility.
  • Leveling feet provide stability and added safety.
  • Thru-wall access ports on right and left chamber sides for probes, sensors, etc.
  • Interior GFCI duplex receptacle on 115V Model (single European 230V CEE 7 on 230V Model) for shakers, cell rollers, and other equipment.
  • Exterior receptacle on upper-right side of control panel for connecting optional recorder or other equipment.

Ordering Information:

  • Reinforced floor/shelf components are available for shakers, cell rollers, or other heavy equipment or product loads inside chamber.
  • Units also available with chart recorders.


Thermo Scientific Forma 3960 Series Environmental Chambers Product Brochure