ISO 2781
Rubber, vulcanized or thermoplastic -- Determination of density


ISO 2781 specifies a method for determining the relative density (apparent density) of elastomers and solid plastics through immersion in an appropriate liquid. Based on Archimedes' principle, this standard applies to vulcanized rubbers, thermoplastic elastomers, and plastic materials. The procedure enables precise measurement of material density, a critical parameter for assessing product quality, composition, and physical characteristics. This straightforward and reproducible technique is widely utilized in industrial quality control to ensure consistent material properties and performance.


ISO 2781 standard webpage
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