2018DIN EN ISO 2507-1:2018-01 Thermoplastics pipes and fittings - Vicat softening temperature - Part 1: General test method (ISO 2507-1:1995); German version EN ISO 2507-1:2017
1970DIN EN ISO 2507-1 E:2017-04 Vicat softening temperature of thermoplastic pipes and fittings Part 1: General test method (draft)