24K Pure ECO Gold Plating Solution - TDS
Gold Plating Services’ ECO 24K Pure Gold Plating Solution operates at a high cathode efficiency producing a pure gold deposit which meets ASTM B488. This cyanide free, sulfite gold complex solution produces a lustrous to bright gold deposit with relatively low internal stress. This type of high purity, (99.99% gold purity), deposit is typically used in the medical, semi-conductor, electronic, and PWB industries where soft, high purity gold is required. Note: Due to the grain structure of this type of gold deposit the reflective qualities of the surface will become noticeably “matt” with increased thickness.
Operating Conditions
Range
Temperature 45° - 60° C (115° – 140° F)
Anode to Cathode Ratio 1:1 (or higher)
Specific Gravity 9 – 28 Be
PH (electrometric) 8.5 – 10.5 (optimum 9.5)
Time to deposit 0.0001’’ (2.5 micron) 13 minutes at 3 ASF (depending on conditions)
Efficiency 95 - 120-mg/ampere minute
Filtration Continuous
Hardness 60 – 80 Knoop
Current Density 3 amperes per square foot, (20 ma/in2 )
Anode Platinized titanium (preferred), or Type 316 stainless steel
Agitation Moderate relative Cathode to solution movement
NOTES:
To insure consistency of deposit, the following operating conditions should be controlled;