2021DIN EN ISO 9454-2:2021 Soft soldering fluxes - Classification and requirements - Part 2: Performance requirements (ISO 9454-2:2020); German version EN ISO 9454-2:2020
1970DIN EN ISO 9454-2 E:2020-09 Soldering flux classification and requirements Part 2: Performance requirements (draft)
2000DIN EN ISO 9454-2:2000 Soft soldering fluxes - Classification and requirements - Part 2: Performance requirements (ISO 9454-2:1998); German version EN ISO 9454-2:2000