Alumina Crucible: High Purity 50 x 20 x 20 mm Mini Combustion Boat

One high purity Alumina combustion boats for chemcial calcining, metal casting, and ceramic sample preparation 

Dimension: Length: 50 mm; Width: 20 mm; Height: 20 mm 

Shape: as picture 

Purity: Al2O3 > 99.5%;  Fe2O3 < 0.01% 

100% impervious

Density: > 3.8 g/cm3

Max. working temperature: 1750 oC or 3180 F

Capacity:  ~20 ml

Note: Never heat and cool faster than 5°C/min. Otherwise, the crucible may crack.

Alumina crucibles are made by casting method, which does not have precise dimensions.