XRF Scientific provides an extensive range of Platinum Crucibles, Dishes and Moulds. Our Platinum Labware comes in standard configurations or we can assist in the design and manufacture of specialised platinum products. We take great pride in the fact that it can meet your laboratory needs from the most basic platinum utensils through to the most intricate individual designs.
Metals used for laboratory apparatus must have the following properties:
- High temperature strength
- High melting point
- Corrosion resistance
- Oxidation resistance
Platinum and its alloys possess these qualities and is therefore the most widely used metal for analytical laboratory apparatus. Properties of platinum and some common platinum alloys are briefly discussed here. All platinum from XRF Scientific Ltd conforms to International Metal Standards.
Is the best known and least rare of the platinum group metals. Its high melting point, 1773 degrees Celsius, ductility and excellent resistance to chemical attack by acids makes it very suitable for laboratory ware.
PLATINUM 10% RHODIUM
This alloy has melting point of 1850 degrees Celsius, it has greater hardness and higher strength than other platinum alloy. It is capable of maintaining its shape under the hottest furnace conditions.
PLATINUM 5% GOLD
Universally accepted material of choice for crucible and casting moulds for spectro-graphic analysis by x-ray fluorescence (XRF). This alloy has higher temperature strength than pure platinum and has a “non-wetting” property, which results in easy removal of the sample after fusion and allows for many reproducible assays.
PLATINUM GOLD RHODIUM (90/5/5)
This alloy combines the “non-wetting” property of the Pt/Au alloy and the extra strength and durability of Pt/Rh alloys.
PLATINUM 3.5% RHODIUM
The rhodium alloys have higher hardness and high temperature strength making it suitable for more aggressive conditions.
Gold can be used in labware. Its most common application is for hydrofluoric acid treatment of siliceous materials.
Pure silver can be used for fusion with alkali hydroxid.