This standard contains the technical basis - requirements on dimensions, materials, functioning and compatibility and also testing of trap seal of special uses.
DIN 19541:2004 history
2004DIN 19541:2004-12 Trap seals for special uses - Requirements and test methods
2004DIN 19541:2004 Trap seals for special uses - Requirements and test methods
1970DIN 19541:1982 Trap seals for special uses - Requirements and test methods