Evolved Gas Analysis Guide
Guide

Evolved Gas Analysis Guide

Guide

Gain More Insight with a Combination of Powerful Tools

METTLER TOLEDO's EGA guide presents several different application examples of TGA-MS, TGA-FTIR, TGA-GC/MS and TGA-Micro GC/MS.
METTLER TOLEDO's EGA guide presents several different application examples of TGA-MS, TGA-FTIR, TGA-GC/MS and TGA-Micro GC/MS.

Evolved gas analysis (EGA) combines a thermogravimetric analyzer (TGA) with another technique that provides complementary information about the gaseous products released during an experiment.

 

A TGA Can Easily Be Combined With:

  • Mass Spectrometry (MS)
  • Fourier Transform Infrared (FTIR) spectroscopy
  • Gas Chromatography/Mass Spectrometry (GC)/MS
  • Micro GC/MS

This guide provides both the theory of EGA and real-world application examples to show how these advanced techniques are used.

 

Gain Insights beyond Decomposition of Materials

The METTLER TOLEDO concept allows any existing TGA or TGA/DSC instrument to be combined with a gas analysis system. Our comprehensive EGA guide presents several different application examples that demonstrate the analytical power and versatility of evolved gas analysis to characterize the most advanced materials and complex formulations.

 

The Advantages Offered by Each Technique:

Mass Spectrometry (MS)

  • Detection of small molecules (COx, NOx, SOx, H2O, HCl, etc.)
  • Residual solvents in active pharmaceutical ingredients

Fourier Transform Infrared (FTIR) spectroscopy

  • Detection of simple and complex compounds
  • Residual solvents in active pharmaceutical ingredients

Gas Chromatography/Mass Spectrometry (GC)/MS

  • Volatile molecules up to about 250 amu

Micro GC/MS

  • Detection of small molecules ("permanents") is possible without MS
  • Detection of light and medium weight compounds by Micro GC/MS