scope:

This Standard specifies a method for determining the 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 quality control, not specification, purposes (see JIS K 6253-2).

NOTE: The International Standard corresponding to this Standard and the symbol of degree of correspondence are as follows.

ISO 7619-2: 2010 Rubber, vulcanized or thermoplastic-Determination of indentation hardness-Part 2: IRHD pocket meter method (MOD)

In addition, symbols which denote the degree of correspondence in the contents between the relevant International Standard and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/lEC Guide 21-1.

WARNING: Persons using this Standard should be familiar with normal laboratory practice. This Standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices.