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The composition of a plastic is specified by detailing its polymer type, additives, and any fillers used. Commonly, this includes the primary polymer (such as polyethylene or polypropylene), along with specific percentages of stabilizers, plasticizers, colorants, and reinforcement materials. Additionally, industry standards and specifications, such as those from ASTM or ISO, may be referenced to ensure consistency and performance criteria. Analytical techniques like spectroscopy or chromatography can also be employed to verify the composition.

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2mo ago

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