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Português DSC vs. TGA: Understanding Their Roles in Material Testing
Thermal analysis techniques provide essential information about how materials behave under controlled heating or cooling. Two of the most widely used methods are thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). Although both study material responses to temperature, they measure different properties and are applied in complementary ways.
Thermogravimetric Analysis (TGA)
TGA continuously records the weight of a sample as it is heated. From these weight changes, laboratories can determine moisture, volatile matter, ash content, and loss on ignition (LOI). TGA is commonly used for soils, ores, cement, plastics, food, feed, waste, and many other materials where composition and thermal stability are critical.
Differential Scanning Calorimetry (DSC)
DSC measures how much energy is absorbed or released by a sample as it undergoes physical or chemical changes with temperature. This reveals melting points, crystallization, glass transition temperatures, and reaction enthalpies. DSC is widely used in polymers, pharmaceuticals, and materials science to study structural and thermal transitions.
Complementary Roles
Together, TGA and DSC provide a broader understanding of material behavior. TGA shows how much mass is lost and at what temperatures, while DSC reveals the energy changes driving those transitions. Using both methods, laboratories can connect weight changes to the underlying thermal events.
Navas Instruments: Advancing Thermogravimetric Analysis
While DSC and TGA are distinct, many laboratories rely on TGA for routine quality control and compliance. The multi-sample, multi-stage thermogravimetric analyzer (TGA) from Navas Instruments enhances this capability by offering:
- Multi-sample throughput – analyze many crucibles in one automated run.
- Multi-stage programming – replicate complex heating cycles with precision.
- Continuous data capture – all weights, temperatures, and times recorded throughout the analysis.
- High-speed mode – up to 10 measurements per second for specialized single-sample studies.
- Excel export – complete datasets available instantly for review, reporting, and LIMS integration.
By combining throughput, accuracy, and comprehensive data recording, Navas Instruments TGA ensures laboratories not only obtain results such as moisture, volatile matter, ash, and LOI, but also a fully traceable record of every parameter. This makes it a powerful alternative to traditional single-sample instruments.
