EN ISO 2439:2000 Flexible Cellular Polymeric Materials - Determination of Hardness (Indentation Technique) ISO 2439:1997, Including Technical Corrigendum 1:1998
2008EN ISO 2439:2008 Flexible cellular polymeric materials - Determination of hardness (indentation technique) (ISO 2439:2008)
2000EN ISO 2439:2000 Flexible Cellular Polymeric Materials - Determination of Hardness (Indentation Technique) ISO 2439:1997, Including Technical Corrigendum 1:1998