Horizontal tube furnace: Barnstead Thermolyne 21100 (300 ºC)

Horizontal tube furnace: Barnstead Thermolyne 21100 (300 ºC)

Equipment: Horizontal tube furnace Barnstead Thermolyne 21100, model 21130-33 (300 ºC)
Technique: Thermal annealing
Contact person (UNINOVA): Pedro Barquinha (pmcb@fct.unl.pt), Ana Rovisco (a.rovisco@fct.unl.pt)
Responsible: Alexandra Gonçalves (amfg@fct.unl.pt)

Description: The type 21100 furnace is a small, inexpensive furnace intended for applications requiring temperatures up to 300°C. Features accurate, automatic temperature control with self-tuning function that maintains pre-set temperature, and heating elements are embedded in ceramic fiber insulation for rapid heat up and cool down.


  • Pyrex tube about 4.6 cm diameter;
  • Max. sample dimensions: 4.6 cm x 4.6 cm;
  • Overall chamber dimension (W × H × D): 40.7 cm × 37.4 cm × 31.0 cm;
  • Max. working temperature: 300ºC.

Link for additional information: https://www.nist.gov/system/files/documents/ncnr/E133tubefurnace.pdf