2005DIN EN 480-12:2005-12 Admixtures for concrete, mortar and grout - Test methods - Part 12: Determination of the alkali content of admixtures; German version EN 480-12:2005
2005DIN EN 480-12:2005 Admixtures for concrete, mortar and grout - Test methods - Part 12: Determination of the alkali content of admixtures; English version of DIN EN 480-12:2005
1997DIN EN 480-12:1998 Admixtures for concrete, mortar and grout — Test methods — Part 12: Determination of the alkali content of admixtures