This International Standard specifies a dead ioad method for the determination of the hardness of very soft
vulcanized or thermop as c rubbers using the very low rubber hardness (VLRH) scale.
The relation between the depth of penetration and the VLRH scale is linear.
ISO 27588:2008 history
2012ISO 27588:2012 Rubber, vulcanized or thermoplastic - Determination of dead-load hardness using the very low rubber hardness (VLRH) scale
2008ISO 27588:2008 Rubber, vulcanized or thermoplastic - Determination of dead-load hardness using the very low rubber hardness (VLRH) scale