Rubber, vulcanized or thermoplastic. Determination of hardness - Indentation hardness by IRHD pocket meter method1 Scope This document specifies a method for determining the indentation hardness of vulcanized or thermoplastic rubber by means of a pocket hardness meter calibrated in IRHD. The use of such meters is primarily intended for control, not specification, purposes (for specification, see ISO 482). It is possible to increase precision by fixing the pocket hardness meter on a support.

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