Description
|
Laboratory Platinum Crucibles are durable, have high resistance to chemical corrosion and able to cope with elevated temperatures up to 1200°C.
|
Dimensions – guide
|
Diameter = 35mm.
|
Nominal capacity 25ml
|
Supplied in singles, natural finish.
|
The above listing is a guide on resistance or otherwise of platinum crucibles, it’s not an exhaustive guide. Therefore we recommend any new or unknown compounds, heated for first time in your laboratory, a test is undertaken with a proven/old platinum crucible in first instance.
|
Lids are available.
|
Since this is a rare metal its subject to daily exchange and metal price fluctuations, please enquire at latest prices.
|
Heating/Cooling Information
|
Platinum crucibles are soft at room temperature, deformation increases between 700°C – 1000°C as the temperature increases.
|
Recommended maximum process temperature 1200°C.
|
During heating and cooling platinum crucibles only handle or touch with either platinum tipped or ceramic coated instruments/surfaces.
|
Notes
|
Platinum crucibles can become damaged, decay or fail:
|
with low melting point metals such as tin, antimony and bismuth.
|
using unknown compounds, heated for first time.
|
heating in presence of carbon yellow flame – always use oxygen rich oxidising flame.
|
when associated with following elements, silicone, lead, antimony and phosphorus, which may be airborne or nearby during heating.
|
with sulphur.
|
there are evaporation losses of platinum, even at room temperature a film of platinum oxide builds up, elevated temperatures oxidisation accelerates evaporating in use.
|
unnecessarito ly heating crucibles for long periods of time since this coarsens the grain structure leading to cracking and embrittlement.
|
when heated in furnaces the ceramic floor of the furnace must be free of contaminates and airborne contamination.
|
if heating a number in furnaces keep them apart to avoid fusing together.
|
placing near or directly on heating elements within furnaces.
|
handled
|
Reviews
There are no reviews yet.