DIN 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
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
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