MaTestLab > Test Standards > ASTM D6980 Determination of Moisture in Plastics by Loss in Weight
Last updated 30th January 2026
ASTM D6980 Determination of Moisture in Plastics by Loss in Weight
The ASTM D6980 test provides the procedure for the quantitative detection of moisture using loss in weight method down to 50 ppm, which applies to most polymers. Specimens examined in this procedure can reach or surpass 250°C; a temperature high enough warranting caution while handling test specimen after the testing is completed. Moisture has a significant impact on the physical qualities and processability of plastics. High moisture content may produce surface defects (e.g., splay or bubbling) or degradation via hydrolysis. Low moisture (at high temperatures) has been shown to cause solid-phase polymerization. The test standard is meant to serve as a control, acceptance, and evaluation test.
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ASTM D6980 Introduction
ASTM D6980 is a test method for determining the moisture content of plastic materials using a loss in weight method. For thermoplastics, thermostats, and elastomers, among other polymers, the D6980 test procedure is suitable. The D6980 test is commonly employed in sectors where plastic materials are substantially used, including automotive, packaging, and electronics. Research, performance assessments, material requirements, quality control, and reliability checks can all benefit from the test’s results.
ASTM D6980 serves as a standard protocol for identifying and quantifying volatile organic compounds present in polymer materials, utilizing static headspace gas chromatography. This analytical method is particularly effective for detecting low-molecular-weight substances that can influence the odor, performance, or overall stability of plastics. Its application is crucial in quality assurance and research and development across various sectors, including packaging, automotive, and consumer products, where maintaining material integrity and meeting regulatory compliance are essential.
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ASTM D6980 Testing
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Get Certified ASTM D6980 for Accurate Moisture Analysis
ASTM D6980 certification ensures that labs use internationally accepted methods that can be used to state the moisture content in plastics. With certification, there is a guarantee of consistency in outcomes, repeatability, and standards in the industry, which assists in making decisions in the manufacturing process, selecting materials, and submitting regulated applications.
ASTM D6980 Testing Procedure and Requirements
Test Principle
Loss in weight due to moisture removal
Heating Method
Oven or moisture analyzer
Test Temperature
Material-specific, controlled
Sample Mass
As specified by the method
Heating Duration
Until a constant weight is achieved
Measurement
Initial and final mass
Result Expression
Percentage moisture content
A Thermogravimetric Analyzer
ASTM D6980 Scope
Relevant to most plastics.
Loss in weight determines moisture.
Applicable to pellets, powders, and molded plastics. Applied in process control and material qualification.
Facilitates comparative and regular testing.
ASTM D6980 Equipment and Sample Preparation
Specimen Details
Plastic pellets, powder, or molded parts
Specimen Preparation
Clean, representative samples free from contamination
Specimen Dimensions
Not critical; mass-based measurement
ASTM D6980 Technique Process, and Data Collection
When testing in ASTM D6980, all the samples are weighed and then heated at a certain temperature to dry. The sample is then cooled in a controlled condition following heating and reweighed. Moisture content is calculated by the difference between the initial weight and the final weight. Indirect data gathered offers firsthand information as to the appropriateness of materials to the processing and storage requirements.
ASTM D6980
ASTM D6980 Results and Interpretation
The ASTM D6980 results are given in terms of moisture content by weight as a percentage. Greater moisture content can be a signal that further drying is necessary before processing, and low moisture content is a signal that the material is ready to be molded or extruded. The same performance in the batches contributes to constant manufacturing performance and low defect rates.
ASTM D6980 Use/Applications
Plastic raw material quality control.
Checking of drying efficiency.
Optimization in molding and extrusion.
Checking of incoming materials.
Material and research development.
Common Challenges and Troubleshooting
The mistakes can be caused by the wrong choice of temperature, contamination of samples, or ambient humidity before testing. Quick processing of samples with the use of sealed containers, fast handling, and proven heating conditions is used to enhance accuracy and repeatability.
ASTM D6980 Problem & Solution
Problem: Varying moisture readings between tests
Solution: Uniform sample handling; exposure to the environment should be avoided, and heating temperature and time should be controlled strictly as per ASTM D6980.
ASTM D6980 Factors to Consider
Speed
Automated moisture analyzers make it possible to very quickly determine moisture with reduced time of testing without impairing the accuracy.
Expertise
Experts in the laboratory will confirm the right choice of the temperature and adherence to ASTM D6980 and provide reliable and repeatable results.
Cost
ASTM D6980 testing services are cost-effective, and more optimization of the laboratory resources is achieved without compromising on the quality of moisture analysis and standard compliance.
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FAQ's
Where can I get the astm d6980 tested?
You can share your astm d6980 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 d6980 test to various testing techniques.
How much do I need to pay for the astm d6980 test?
Please contact us for a detailed quote for your astm d6980 testing needs. Cost incurred to carry out different astm d6980 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 d6980?
The required number of samples or specimens should comply with the procedure given in the astm d6980 standard. However, the MaTestLab operations team can assist you for your special requirements once you share your testing details with us.
How much discount can I get on the astm d6980 test?
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 d6980 test?
The turnaround time for astm d6980 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 d6980 tested?
You can share your astm d6980 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 d6980 test to various testing techniques.
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