|Crucible Use Guidelines|
|Use Fire Clay Crucibles for general fire assay fusions and other melting applications from 2200oF up to 2400oF.|
|Graphite Crucibles are typically used for smelting and refining of precious and base metals.
They are suitable for use at temperatures up to 3000oF.
|Fused Silica Crucibles are used for melting gold, silver, and other precious metals at up to 2750oF.|
|Silicon Carbide Crucibles are more durable and long lasting than graphite crucibles. They can be used for melting, smelting, and refining of precious and base metals, concentrates, and other products|
|Be sure and use the proper flux to ensure long life of the crucible and to produce the desired result.|
|Various Assay and Refining Pre-Mixed Fluxes as well as individual flux components are available.|