The ASTM D618-21 standard, titled "Standard Practice for Conditioning Plastics for Testing," defines the procedures for conditioning plastic materials to ensure reproducible test results. Because temperature and humidity significantly affect the physical and electrical properties of plastics, this standard provides a consistent baseline for material comparisons across different laboratories. Key Conditioning Procedures
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Reproducibility: Eliminating the influence of a material's previous exposure history (e.g., storage in a hot warehouse) to ensure consistent data. The ASTM D618-21 standard, titled "Standard Practice for
