Corundum crucible, the scientific name of alumina crucible, usually we call the corundum crucible with an alumina content of more than 95%.

1. Corundum crucible is composed of porous fused alumina, which is firm and refractory.

2. Corundum crucible is suitable for melting samples with some weak alkaline substances such as anhydrous Na2CO3 as a flux. It is not suitable for melting samples with strong alkaline substances such as Na2O2 and NaOH and acidic substances (such as K2S2O7, etc.).

3. Characteristics of corundum crucible: high temperature resistance, acid and alkali nonresistance, rapid cold and rapid thermal resistance, chemical corrosion resistance.