DIN EN IEC 63299:2022-10 Chemicals used for treatment of water intended for human consumption - Sulfuric acid; German version EN 899:2022 / Note: This standard is part of the DVGW body of rules.
2023DIN EN IEC 63299:2023-08 Classification of magnetic powder cores (IEC 63299:2022); German version EN IEC 63299:2022
2022DIN EN IEC 63299:2022-10 Chemicals used for treatment of water intended for human consumption - Sulfuric acid; German version EN 899:2022 / Note: This standard is part of the DVGW body of rules.