The presence of rhodium in alloys of this type is strictly necessary, as rhodium is the only element capable of giving stability in the nickel release result.
Our R&D laboratory has implemented the NI1811 line of low nickel release alloys of 750 ‰ (18 Kt) white gold. The main advantage over previous versions is the lower amount of rhodium. This is the result of a research process aimed at verifying what is the minimum rhodium title necessary to give stability to the result. Like traditional NI1811 alloys, the alloys of this new line also fall within the limits established by the legislation.
The average nickel release value on NI1811 alloys at 750‰ is: 0,12 μg/cm²/week.
The percentage of compliance on NI1811 alloy samples at 750‰ is: 99,1%
The average nickel release value on traditional alloys at 750‰ is: 0,52 μg/cm²/sett.
The percentage of compliance on traditional alloy samples at 750‰ is: 80,5%