This standard is applicable to the determination of titanium content in tungsten powder, tungsten bar, tungsten trioxide, tungstic acid and ammonium paratungstate. Measuring range: 0.0005~0.012%.
GB/T 4324.19-1984 history
2012GB/T 4324.19-2012 Methods for chemical analysis of tungsten.Part 19:Determination of titanium content.The diantipyrylmethane photometric spectrophtometry
1984GB/T 4324.19-1984 Methods for chemical analysis of tungsten--The diantipyrylmethane photometric method for the determination of titanium content