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DIN EN ISO 2439:2009
Flexible cellular polymeric materials - Determination of hardness (indentation technique) (ISO 2439:2008); German version EN ISO 2439:2008
This document specifies four methods for determination of indentation hardness and one method for determination of compressive deflection coefficient and hysteresis loss rate of flexible cellular materials. These five methods are applicable only to latex foam, urethane foam and PVC foam of the open cell type.
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Deutsches Institut für Normung [din]