This part of GB/T 22638 specifies the method for the determination of the surface wetting tension of aluminum foil. This section applies to the determination of the surface wetting tension of aluminum foil.
GB/T 22638.4-2008 history
2016GB/T 22638.4-2016 Test methods for aluminium and aluminium alloy foils—Part 4:Determination of surface wetting tension
2008GB/T 22638.4-2008 Test methods for aluminium and aluminium alloy foils.Part4:Determination of surface wetting tension