Our labware is predominantly made from platinum, but with our customised approach and expertise in precious metals we provide apparatus in the most suitable material for your desired properties. We make apparatus in:
- 99.7% platinum with small additions of iridium and rhodium, added for strength and durability. We can use pure platinum, which is superior in its resistance to acids and fusion mixtures.
- 10% rhodium platinum and other rhodium platinum alloys for a stronger material at all temperatures, which can be used in strenuous physical conditions. We don’t recommend it for repeated fusions, where platinum is more resistant.
- 5% gold platinum, recommended for sample bead preparation used in precise analytical techniques. It ensures high accuracy of the analysis by stopping samples adhering to the crucible or mould and leaving a residue, which can roughen the sample surface.
- Iridium for growing single crystals from high purity melts at elevated temperatures.
- Silver for fusions with alkali hydroxides.
- Gold for hydrofluoric acid treatment of silicon materials.
We can also make labware in Zirconia Grain Stabilised (ZGS) platinum alloys. Dispersing zirconia particles into the metal considerably improves its performance by:
- Slowing down the degradation, extending the apparatus life.
- Increasing its mechanical strength and durability.
- Dramatically increasing resistance to grain growth, contamination and deformation.
ZGS platinum alloys are suitable for high stress and high temperature applications, with the extra strength allowing us to make these crucibles and dishes thinner, saving costs from reduced amounts of precious metal.
We developed ZGS 5% gold platinum for non-wetting applications, which provides outstanding resistance to progressive contamination from impurities in the melt. We recommend this material for x-ray fluorescence sample preparation to give more consistent results by producing smooth sample beads.