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Multi-Position Tube Furnace 1100C (1- 2" Dia) w/ Programmable Temperature Controller, GSL-1100X-NT-LD

Sale Price: Starting at USD$2,498.00
If you are international, please click this.
Transported by LTL Freight (Truck)

Product Options

by Voltage:

GSL-1100X-NT is a compact tube furnace (1~2" diameter) designed for firing small samples up to 1100oC. The built-in precision temperature controller can program up to 30 segments of heating rate, dwell time, and cooling rate. The furnace can be set up in both vertical and horizontal positions to meet various applications such as firing samples, VLS, CVD, and quenching tests. Set the furnace horizontally or at an angle to grow electronic crystals for the semiconductor industry use or rotate it vertically for sintering applications.
This version does not include the Stainless steel vacuum flanges with valves, vacuum pressure gauge, and quartz tube. To order the furnace with these components together, please click here.


Furnace Structure

  • Energy-saving high-purity Al2O3 fibrous insulation liner
  • Stainless steel shell with adjustable height
  • Adjust three knobs on the back to flexibly change the furnace's vertical position within travel distance (from the control box platform to the lower end of the chamber): 4.5'' ~ 12'' (without hanger and supporter)
  • Multiple configurations for various thermal processing needs 
  • Multi-position adjustable                 Using as a Vertical furnace              Fixing Knobs for Position Adjustment

Current Rating

15 Amps



AC 110V Single Phase or AC 220V Single Phase can be selected in the option bar 

Working Temperature

  • Max. Temperature: 1100 °C (< 1 hr)
  • Continuous working temperature: 1000 °C

Heating Rate

Max. Heating Rate: 10°C /min
Temperature Distribution           
Heating Zone
  • Heating Zone Length: 12" (300mm)
  • Constant Temperature Zone: 3.1" (80mm)

Temperature Controller

  • PID automatic control and auto-tune function.
  • 30 programmable segments for the precise process
  • Built-in protection for overheated and broken Thermal couple
  • Temperature Accuracy: +/- 1 °C
  • K-type thermal couple 

Advanced Temperature Controller (Optional)

Heating Elements
Fe-Cr-Al Alloy doped by Mo
Processing Tube (Sold Separately) & Tube Adapter
Two choices of quartz tubes: 25 ODx22 ID x 610 L (mm) quartz tube or 50 ODx44 ID x 610 L (mm) quartz tube (Please find in related products)
  • The furnace chamber is designed to adopt a 2" O.D quartz tube, we also include a pair of  2''-1" tube adaptors which allows the 1'' O.D tube be fit on the furnace.
  • Fibrous ceramic tube blocks can be used for blocking heat radiation generated from the tube center. (Ceramic blocks must be fully inserted into the furnace chamber before heating).
  • Quartz blocks (optional) are ideal for cleaner processing and higher vacuum efficiency.
               Click here to choose a crucible
Vacuum Flange (Sold Separately)
Two choices of stainless steel flanges with vacuum gauge and valves
  • 2" flange with 1/4'' tube feedthrough port to insert 1/4" T/V(click bottom right picture to see details )
  • 1" flange has no thermocouple insert ( click the bottom left picture to see details )
      1" Flange Set             2" Flange Set                  

Options: Click on furnace picture (lower right) below to see how to insert an external thermocouple; additional furnace accessories are available for purchase.

Fitting Ports (Sold Separately)

  • Both flanges will come standard with 3/8" barbed hose fittings
  • In order to increase the throughput and achieve a high vacuum, you may replace the standard barbed hose fitting with theKF25 adapter (please click the underline to order).
  • For supplying high-pressure gas, you may replace the standard barbed hose fitting with the 304SS 1/4" Swagelok® Tube Fitting x 1/4" BSPP Male Connector (please click the underline to order).

Vacuum Pressure

  • Limited by a vacuum pump
    • 50 m-torr can be achieved by a mechanical pump
    • 10^-5 torr can be reached by molecular pump

Digital Pressure Gauge (optional)

A gas-type independent (above 10mbar) digital vacuum gauge with a wide range between 3.8x10-5 to 1125 Torr. Aside from greater measurement precision, this gauge reduces risks of chamber explosions caused by the incorrect reading of gas pressures due to gas-type dependency. (Please click picture left for details)



Shipping Package Dimensions

40"(L) x 30"(W) x 30"(H)

Shipping Weight

80 lbs


One-year limited warranty with lifetime support.
  • CE Certified
  • NRTL or CSA certification (UL61010 or SPE1000) is available at the extra cost.

Application Notes

Click here to learn about the installation of a gas regulator

  • Tube furnaces with quartz tubes are designed for use under vacuum and low pressure < 0.2 bars 
  • Attention: A two-stage pressure regulator must be installed on the gas cylinder to limit the pressure to below 3 PSI for safe operation. Click here to learn the installation of a gas regulator.
  • The vacuum limit for all quartz tube furnaces is < 1000oC.
  • The flow rate for gases should be limited to< 200ml/min)for reducing thermal shocks to the tube
  • Please click here to see our typical temperature profile calibration results at various temperatures.  
  • In order to obtain accurate temperature inside a tube furnace, please click here to learn how to calibrate the temperature on your own.
  • How to set up a ceramic tube and vacuum flange for MTI tube furnaces.

Operation Instructions


Related Products

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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. Prices vary from country to country.
2. We may add extra charges for paper orders and NET 30 terms due to extra labor costs.
3. The prices listed are subject to change without notice.