Used Lab Equipment

Used Lab Equipment

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Thermo Forma 3911

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Thermo Forma 3911

Thermo Forma 3911

Cambridge Scientific ID #: 22523


  • 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)



  • Amperage: 15 A
  • Capacity (English): 11 cu. ft.
  • Certifications/Compliance: ICH, FDA, TAPPI, ASTM™
  • Depth Interior: 27 in (68.8cm)
  • Depth: 32 in (81.3cm)
  • Capacity: 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: 51.5 in (130.8cm)
  • Height Interior: 24 in (60.9cm)
  • 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: 38 in (96.5cm)
  • Width Interior: 31 in (78.7cm)
  • Lighting: Optional Interior Lighting
  • Type: Environmental Chamber
In Stock Worldwide Shipping Call: 1-877-Used-Lab

Our used lab equipment is fully refurbished, guaranteed to work up to manufacturers specifications and are delivered to our customers in as close to new condition as possible. Typical turnaround for refurbishing of used lab equipment is 2-4 weeks. They also come with our standard 6 Month parts and labor warranty. Prices do not include S/H unless otherwise indicated. Pictures enclosed and the actual unit may vary unless specified.


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