Interpreting Results from Thermogravimetric Analysis

Thermogravimetric analysis (TGA) provides critical information about how a material changes when exposed to controlled heating. By continuously measuring the change in mass of a sample as temperature increases, laboratories can evaluate moisture, volatile matter, ash content, and loss on ignition (LOI). These results are widely used in industries such as cement, mining, food and feed, environmental testing, polymers, and waste treatment to ensure quality, optimize processes, and maintain regulatory compliance.

The interpretation of TGA data typically focuses on:

  • Initial weight loss – often attributed to free moisture or loosely bound water.
  • Subsequent steps – linked to decomposition of carbonates, release of organics, or combustion of volatiles.
  • Final residue – representing stable mineral phases or ash content.

By understanding these weight changes across different temperature ranges, laboratories gain insight into the composition and thermal stability of their materials.

Complete Data with Navas Instruments TGA

The multi-sample, multi-stage TGA from Navas Instruments takes thermal analysis to a higher level. In addition to calculating moisture, volatile matter, ash, and LOI, the instrument automatically records for every sample:

  • All weights measured continuously during heating
  • All temperature values throughout the programmed stages
  • All times corresponding to each weight and temperature point

This means every step of the analysis is fully documented, not just the start and end points. The complete dataset is exported directly into Excel spreadsheets, giving laboratories full traceability, easy data analysis, and seamless integration into LIMS.

Why Laboratories Choose Navas Instruments TGA

  • Multi-sample capacity – analyze multiple samples simultaneously.
  • Multi-stage design – reproduce complex heating programs automatically.
  • Comprehensive data export – all weights, temperatures, and times recorded and delivered in Excel.
  • Improved accuracy and reproducibility – consistent results with minimal operator intervention.

See how the multi-sample, multi-stage thermogravimetric analyzer from Navas Instruments provides not only results but also complete datasets—improving productivity, accuracy, and confidence in every analysis