BS 1728-9:1957
Methods for the analysis of aluminium and aluminium alloys. Determination of manganese (volumetric: arsenite/nitrite method)
standard by BSI Group, 09/12/1957
BS 1728-8:1957
Methods for the analysis of aluminium and aluminium alloys. Determination of iron (absorptiometric 1:10-phenanthroline method)
standard by BSI Group, 09/12/1957