LECO TGA801 Thermogravimetric Analyzer

Moisture, Ash, Volatile Content, and Loss-on-Ignition
The TGA801 is the latest generation of automated macro thermogravimetric analyzers to enter our lineup. The TGA801 maintains the core capabilities and reliability of previous generations of LECO macro TGA instruments, while providing key improvements in performance and robustness. By incorporating state-of-the-art hardware with an on-board touch-screen software platform and a rugged design, the TGA801 provides accurate, high-precision thermogravimetric constituent analysis—moisture, ash, volatile content, and LOI in various organic, inorganic, and synthetic materials. Complying with ASTM standardized methods, the TGA801 is applicable to many industries and applications including coal, cement, catalyst, foods, and feeds.

Macro thermogravimetric analysis replaces the often slow, labor-intensive, traditional manual gravimetric techniques that require multiple sample weighing and transfer steps involving ovens, muffle furnaces, and desiccator equipment. The flexible method settings, automation, and hardware capabilities of the TGA801 deliver an automated analysis process while requiring only the manual measurement of the initial sample mass, saving you time in your lab.

Cornerstone Mobile remote software keeps the user updated from their smartphone, tablet, or PC on the instrument’s analysis batch progress, performance, and status while away from the instrument.

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  • Automated thermogravimetric analysis batch of up to 19 samples
  • Eliminate the handling, transfer, and cooling time required of traditional gravimetric methods
  • Determine multiple constituent analysis such as moisture, volatile matter, and ash from a single sample and analysis batch sequence
  • Optimize analysis time using automatic end point recognition based upon sample mass constancy
TGA801 Coal Sample sm


  • Stable and precise mass measurements throughout the analysis cycle using an integrated, thermally isolated 0.0001 g low drift balance
  • Precise furnace temperature ramping and set point control provides excellent temperature accuracy with low temperature overshoot
  • Rotating automation sequence provides uniform exposure of all samples to the furnace conditions
  • Automated control of furnace atmosphere and gas flows (air, nitrogen, or oxygen)
TGA801 Close Up Balance sm



  • Automated multi-sample analysis batch, up to 19 samples
  • Macro sample mass capabilities, nominal 1 g
  • Flexible method settings enable configuration of system to emulate classic gravimetric test method requirements
  • Optimized analysis time with the automatic end point recognition using sample mass constancy
TGA801 Carousel with Close Up Crucible sm


  • Rugged, high-performance ceramics enable operation temperature up to 1000 °C
  • Robust and reliable motor-driven rotary system automation mechanism provides versatility and speed
  • External ventilation system provides reliable removal of furnace exhaust while eliminating possible balance vibration interference
  • Software provides seamless sample login and loading process with real time graphical displays of analysis cycle data
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  • TGA801-SMC TGA801 with PC and touch-screen display
  • TGA801-DMC TGA801 Dual Furnace Package with PC and touch-screen



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