GT4A is a mildly acidic gold plating electrolyte that deposits a color which is near that of pure 24 kt gold. The additional metal which is co-deposited with the gold as an alloy allow for an achievable thickness of 3 micron in a layer which remains 99.7% gold by weight. The wider range of obtainable thicknesses combined with the ability to solder the plating deposit, allow for this electrolyte to be used in both technical and decorative applications.
