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Mini Tube Furnace with 20mm Quartz Tube & Flange and Temperature Controller upto 1000°C - GSL-1000X-20-LD

Transported by LTL Freight (Truck)

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Tube size and voltage:
GSL-1000X-20  is a 20 mm OD mini tube furnace designed for processing small samples up to 1000oC under vacuum or controlled atmosphere.  The
stainless steel vacuum flanges with valves and quartz tube are included for immediate use. The built-in precision temperature controller can program up to 30 segments of heating, dwelling, and cooling steps. The furnace and controller is separatable , which can be set up in vertical or  horizontal positions to meet various applications such as sample heating, VLS, CVD and gas analysis.. 



  • Furnace input  55VAC, 500W max.  50/60 HZ
  •  Need a transformer ( 110/220V - 55V ) to run single furnace under either 110V aor 220VAC
  • May connnect two furnace in series to run at 110VAC

Working Temperature

  • Max. Temperature: 1000 °C  (< 1 hr)
  • Continuous working temperature: 900 °C
  • Max. Heating Rate: 10°C /min

Heating Zone
  • Heating Zone Length:             2.16" ( 55mm)
  • Constant Temperature Zone:   0.8"  " (20mm. +/-  5ºC )

Temperature Controller

  • PID automatic control and auto-tune function.
  • 30 programmable segments for precise thermal processing.
  • Built-in protection for the over-heated and broken thermocouple
  • Temperature Accuracy: +/- 1 °C.
  • K type thermocouple.

Heating Elements

  • Fe-Cr-Al Alloy doped by Mo

Processing Tube

  • Fused quartz tube:  20 mm OD  x 17 mm ID z 192 mm Length is included
  • Two fibrous ceramic tube blocks are included for blocking heat radiation generated from tube center. (Ceramic blocks must be fully inserted into the furnace chamber before heating).

Vacuum Flange


  • One end is KF25 quick clamp flange
  • Another end is screw tighten flange with 1/8 gas inlet

Vacuum Pressure

  • 20 mtorr can be achieved by mechanical pump
  • 10^-6 torr can be reached by molecular pump
  • Please clik the picture below to order vacumm pump


Shipping Weight

50 lbs


One year limited warranty with lifetime support  (Consumable parts such as processing tubes, and O-rings are not covered by the warranty, please  order replacements at related products below.)


  • CE Certified
  • All electric components ( >24V) are UL / MET / CSA certified
  • The furnace is ready to pass TUV(UL61010)  or CSA certification at extra cost. ( please click marks below to learn details )
Operation Instructions
Application Note
  • The furnace is separable with controller  and easy to replace
  • The furnace can be used as vertical position as picture below
  • The furnace is small enough to put into glovebox through airlock chamber
Optional Protective Cover

  • A special made flippable protective shield can be mounted on the furnace for scald protection at an extra cost.
  • If the furnace will be used for a long period of time at high temperature (800°C+), it is recommended to install the protective shield to avoid scalding accidents.
  • Please contact us for more details.

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1. Prices listed online are valid for US market and whom pay by credit card only. There will be extra charges for shipping & handling. Price various from country to country.
2. We may add extra charges for paper order and net30 terms due to extra labor cost.
3. The prices listed are subject to change without notice.