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1250C Small Box Furnace (6" x 6" x 7", 4.2 liter) with Programmable Controller - KSL-1200X-J-UL

In stock
Item Number: KSL1200XJ
Transported by LTL Freight (Truck)


Computerized tool
  • High purity alumina fiber insulation surrounding the chamber provides maximum energy efficiency. 
  • Heavy-duty double-layer structure with a cooling fan to keep furnace exteriors safe to touch. 
  • Doble layer steel case with forced-air cooling to ensure lower safer face temperature.
  • One venting port is built on the top of the furnace
  • One air inlet is located at the back of the furnace.
Chamber Dimensions
  • 150mm(W) x 155mm(H) x 180mm(D), (6" x 6"x 7")
  • Capacity: 4.2 Liter or 0.44 cubic ft

Voltage:  208 -240V Single Phase 50/60 Hz
2.5KW (not suitable for running at 110V from wall plug)
Note: Power cable included but without a plug. Please install a plug on your own or click the link below the picture to choose a plug according to your country or your lab requirement
Operating Temp Range
  • 1250°C  < 1 hour
  • 100-1200°C continuously
Stability at 1000 °C +/- 1.0 °C
Uniformity at 1000 °C +/- 2.0 °C
Max. Heating Rate 30°C/ min.
Thermal Couples K types with Ceramic Sheath
Temperature Controller
  • The digital temperature controller is included.
  • Proportional–integral–derivative control (PID control) and auto-tune function
  • 30 segments programmed with ramping, cooling, and dwelling steps
  • Built-in over-temperature alarm and thermocouple failure alarm
  • +/- 1 ºC temperature control accuracy
  • Default DB9 PC communication port
Temperature controller (optional)
Net Weight 62 lbs
Shipping Weight 115 lbs
Shipping Dimension 40"x30"x36"
Overall Dimensions 
    360mm(L) x 300mm(W) x 510mm(H)  
  • One year limited warranty with lifetime support.  
  • ATTENTION: Any damages caused by the use of corrosive and acidic gasses are not under the coverage of MTI One Year Limited Warranty.

  • CE Certified
  • NRTL (UL61010) or CSA certification is available upon request at extra cost.
Operation Video                        
Application Notes

  • For the longer service life of the furnace, we recommend the heating rate not to exceed 10 °C /min.
  • The cooling rate should not exceed 10 °C /min either.
  • Small cracks may appear on the surface of the refractory ceramics over extended use. This is a normal occurrence and the cracks may be repaired with the alumina coating 
  • The heating module is easy to replace. Click pic left to order spare the Heating module for replacement
  • If firing material release vapor or smoking, please put the furnace into a fume hood as left 2 pictures. 

  • Toxic, corrosive or explosive gases are not allowed for use with this furnace. You may consider the furnace with a separated controller to use in a glovebox  or remote distance  (click Pic. 1 to order ) 
  • If you need to open a hole on the top of the furnace ( Pic. 2), please let us know.  
  • The furnace can be modified into a hybrid tube furnace (Pic. 3)
  • Pic. 1            Pic. 2     Pic. 3

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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.