ASTM E1131 Compositional Analysis by Thermogravimetry

ASTM E1131 is a standard test method used to perform compositional analysis of materials through thermogravimetry. This technique involves subjecting a sample to controlled temperature changes and measuring its weight loss or gain as it undergoes thermal decomposition. This test method is used to determine the amount of highly volatile matter, medium volatile matter, combustible material, and ash content of compounds. ASTM E1131 test method is used in quality control, material screening, and related problem solving areas.


Introduction to ASTM E1131

ASTM E1131 outlines a systematic procedure for conducting compositional analysis using thermogravimetry. This method is particularly useful in determining the composition and thermal behavior of complex materials, including polymers, minerals, pharmaceuticals, and various industrial products.

Compositional analysis is vital for characterizing materials in terms of their chemical components and their thermal properties. Understanding material composition and thermal stability is essential for quality control, process optimization, assessing purity, understanding thermal stability, and ensuring the suitability of materials for specific applications.

ASTM E1131 Test Method

The ASTM E1131 test method involves heating a material specimen at a controlled rate and measuring its weight change. The test is conducted in the following steps:

Test Setup and ExecutionThe material specimen is placed in the TGA equipment, and the analysis chamber is purged with an inert gas to eliminate any atmospheric effects. The TGA equipment gradually increases the temperature at a controlled rate, and the specimen’s weight change is recorded continuously.
AnalysisAs the temperature rises, the material undergoes thermal decomposition resulting in weight loss or gain. The thermal decomposition data is analyzed to record the weight loss or gain, providing insights into the material’s composition and its decomposition or degradation behavior.

ASTM E1131 Specimens

Specimen detailsASTM E1131 specimens are representative of the material being analyzed.
Specimen dimensionsASTM E1131 does not specify a standard specimen size, as it varies based on the type of material and the TGA equipment’s capacity.
Specimen preparationSpecimens are injection molded, machine operated, or dried, ground, or processed as needed to obtain a homogenous and representative specimen.

ASTM E1131 Results

The test method ASTM E1131 evaluates the elemental properties of the materials. The TGA data provides information on the material’s thermal stability, degradation behavior, and compositional analysis. Weight loss or gain peaks in the thermogram correspond to specific components in the material, allowing researchers to determine the material’s composition and identify potential impurities.

Tests Related to ASTM E1131
ASTM D3418 – Standard Test Method for Transition Temperatures and Enthalpies of Fusion and Crystallization of Polymers by Differential Scanning Calorimetry (DSC) is a related standard.


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Please contact us for a detailed quote for your astm e1131 testing needs. Cost incurred to carry out different astm e1131 testing methodology depends on the type of raw material; number of samples, coupons, or specimens; test conditions, turn around time etc. Costs of some ASTM testing methods start from $100 and the final value depends upon the factors listed above. Please contact us for the best and latest prices.

How many samples are required for astm e1131?

The required number of samples or specimens should comply with the procedure given in the astm e1131 standard. However, the MaTestLab operations team can assist you for your special requirements once you share your testing details with us.

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MaTestLab has a vast testing laboratory network, hence we bring you the best testing facilities in a cost-effective way. We offer considerable discounts (15-20%) to our returning customers based on test volume and frequency.

How many days will it take to complete the astm e1131 test?

The turnaround time for astm e1131 test methodology depends upon the test procedure mentioned in the standard test document. However, we at MaTestLab understand your research requirements and hence try to get your test completed within the least possible time.

Where can I get the astm e1131 tested?

You can share your astm e1131 testing requirements with MaTestLab. MaTestLab has a vast network of material testing laboratories, spread across the USA and Canada. We support your all material testing needs ranging from specific astm e1131 test to various testing techniques.

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