GB/T 20975.21-2008 Methods for chemical analysis of aluminium and aluminium alloys.Part 21:Determination of calcium content.Flame atomic absorption spectrometric method (English Version)
This part specifies the method for the determination of calcium content in aluminum and aluminum alloys. This section applies to the determination of calcium content in aluminum and aluminum alloys. Measuring range: 0.01﹪~0.30﹪.
GB/T 20975.21-2008 history
2020GB/T 20975.21-2020 Methods for chemical analysis of aluminium and aluminium alloy—Part 21: Determination of calcium content
2008GB/T 20975.21-2008 Methods for chemical analysis of aluminium and aluminium alloys.Part 21:Determination of calcium content.Flame atomic absorption spectrometric method
2001GB/T 6987.21-2001 Aluminium and aluminium alloys--Determination of calcium content--Fiame atomic absorption spectrometric method
GB/T 20975.21-2008 Methods for chemical analysis of aluminium and aluminium alloys.Part 21:Determination of calcium content.Flame atomic absorption spectrometric method has been changed from GB/T 6987.21-2001 Aluminium and aluminium alloys--Determination of calcium content--Fiame atomic absorption spectrometric method.