Versatile selection of chamber box furnaces in several popular chamber sizes to meet a variety of demanding industrial and laboratory applications.

Product Selection

ModelTemperature ControlCapacityElectrical
BF51748A-1Digital | OTP0.07 cu. ft., 1.99L120V 50/60Hz
BF51748C-1Digital | OTP0.07 cu. ft., 1.99L208/240V 50/60Hz
BF51848A-1Multisegment | OTP | Single Program0.07 cu. ft., 1.99L120V 50/60Hz
BF51848C-1Multisegment | OTP | Single Program0.07 cu. ft., 1.99L208/240V 50/60Hz
BF51766A-1Digital | OTP0.18 cu. ft., 5.3L120V 50/60Hz
BF51766C-1Digital | OTP0.18 cu. ft., 5.3L208/240V 50/60Hz
BF51866A-1Multisegment | OTP | Single Program0.18 cu. ft., 5.3L120V 50/60Hz
BF51866C-1Multisegment | OTP | Single Program0.18 cu. ft., 5.3L208/240V 50/60Hz
BF51794C-1Digital | OTP0.65 cu. ft., 18.4L208/240V 50/60Hz
BF51894C-1Multisegment | OTP | Single Program0.65 cu. ft., 18.4L208/240V 50/60Hz
BF51728C-1Digital | OTP1.5 cu. ft., 42.5L208/240V 50/60Hz
BF51828C-1Multisegment | OTP | Single Program1.5 cu. ft., 42.5L208/240V 50/60Hz


  • Minimize outer surface temperatures while maintaining uniform heat distribution within the chamber.
  • Thermo Scientific Lindberg/Blue M Moldatherm Box Furnaces include unique insulation and heating element composites, and are available in several popular chamber sizes to meet the most demanding laboratory applications.
  • Advanced engineering and specialized construction techniques include variable density insulation, double shell cabinets, long-life heating elements and horizontal side swing doors.
  • Not available in Europe.

Microprocessor-Based Control

  • Selectable self-tuning feature sets best control parameters for the thermal process.
  • PID control (proportional, integral, derivative) prevents overshoot.
  • Main power ON/OFF switch on control panel.
  • Controlled heat-up rate eliminates thermal shock to materials.
  • Quick heat-up and cool-down rates.
  • Adjustable high-limit overtemperature protection.
  • Simultaneous LED display of actual temperature vs. setpoint.
  • Can be configured to display temperature in either °C or °F.


  • Unique double wall minimizes exterior surface temperatures for operator safety and energy efficiency.
  • Side-hinge door for convenient operation and full chamber access.
  • Long-life Type K thermocouple.
  • Air vent (1" dia., top) and air inlet (0.375" dia., rear) for inert atmosphere exchange; will experience some leakage at door.
  • Removable and replaceable Moldatherm hearth plate supports load and prevents damage due to spillage.
  • Energy-efficient Moldatherm insulation with embedded heating elements.
  • Safety door switch to interrupt power to heating element when door is opened; protects heating element and minimizes exposure to end-user.

Digital, Single-Setpoint Controller

  • Single segment, single setpoint, one ramp to setpoint.

Digital Single-Program, Multiple-Segment Programmable Controller

  • Single program with multiple segments for ramp (up and down) and dwell (timed hold) temperature control.

Ordering Information

  • Optional RS485 Digital Communications Port allows controller to be connected to a PC for remote monitoring and control of the furnace.
  • Up to 30 units can be connected to one PC.


  • 10' power cord except 1.5 cu. ft. models which require customer-supplied power cord or hardwiring.


Thermo Scientific Lindberg/Blue M Moldatherm Box Furnace Product Brochure Product Brochure