Thermogravimetric Analyzers TGAs

Thermogravimetric Analyzers (TGAs) are a widely used equipment for moisture testing that measure changes in weight of a material as a function of temperature or time. They play a crucial role in various industries, such as pharmaceuticals, chemicals, and polymers, by providing accurate and reliable analysis of moisture content.

Working Principle

TGAs operate on the principle of weight measurement. A small sample of the material is placed in a crucible and heated at a controlled rate. As the temperature increases, moisture or other volatile components present in the sample evaporate, causing the weight of the sample to decrease. The weight change is continuously recorded and plotted against temperature or time, generating a thermogravimetric curve.

Applications of TGAs in Moisture Testing

• Determining moisture content of solid materials, such as pharmaceuticals, foods, and polymers
• Measuring water absorption and desorption behavior of materials
• Evaluating the effectiveness of drying processes
• Identifying the thermal stability and decomposition temperatures of materials

Advantages of Using TGAs

• Accuracy and Precision: TGAs provide highly accurate and precise measurements of weight change.
• Non-Destructive Testing: In most cases, TGA analysis does not damage the sample.
• Versatile: TGAs can be used to analyze a wide range of materials, from polymers to ceramics.
• Automated: TGA instruments are often automated, allowing for unattended operation.

Conclusion

Thermogravimetric Analyzers (TGAs) are powerful tools for moisture testing. They offer accurate and detailed information about the moisture content and thermal behavior of materials. Their versatility and ease of use make them an essential equipment for various industries and research applications.