This phosphate based concentrate has been specially developed for decorative applications. It will produce bright, white lustrous deposits at thicknesses below 0.5 µm. The recommended maximum thickness is 1 µm.
Available in the following pack sizes:
2 g rhodium content (20 ml)
4 g rhodium content (40 ml)
10 g rhodium content (100 ml)
Other pack sizes can be supplied as required.
Typical requirements for 1 litre solution:
Demineralised or distilled water: 800 ml
Concentrated sulphuric acid: 20 ml (added cautiously to the water with stirring)
RJ100P: 20 ml
All components must be thoroughly degreased using trichloroethylene or a similar solvent. Immediately prior to plating the parts should be immersed in dilute sulphuric acid (5 % v/v).
Rhodium content: 1.5 g - 2.5 g/l
Sulphuric acid content: 10 - 40 ml/l
Temperature: 20°C - 60°C (optimum 40°C)
Cathode current density: Up to 8 A/dm2 (optimum 2 A/dm2)
Current efficiency: 12 % at optimum current density