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1000C Mini Tube Furnace with 20 mm Quartz Tube and Vacuum Sealed Flange - GSL-1000X-20-LD

Sale Price: Starting at USD$2,998.00
If you are international, please click this.
Transported by LTL Freight (Truck)

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GSL-1000X-20  is a 20 mm OD mini tube furnace designed for processing small samples up to 1000oC under a vacuum or controlled atmosphere.  The
stainless steel vacuum flanges with valves and quartz tubes are included for immediate use. The built-in precision temperature controller can program up to 30 segments of the heating, dwelling, and cooling steps. The furnace and controller are 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  50VAC, 500W max. 50/60 HZ
  • Included a transformer (110/220V - 50V) to run a single furnace under either 110V or 220VAC
  • May connect two furnaces 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

Vacuum Flange


  • One end is KF25 quick clamp flange is inluded, without valve
  • Another end is screw tighten flange with 1/4 gas inlet
  • You may click the link below to order the valve and fitting and DIY for connection

Vacuum Pressure

  • 20 m torr can be achieved by the mechanical pump
  • Please click the picture below to order vacuum 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
  • NRTL(UL61010)  or CSA certification is available 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 the picture below
  • The furnace is small enough to put into glovebox through airlock chamber
Optional Protective Cover

  • A special made 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 the US market and who 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 costs.
3. The prices listed are subject to change without notice.