Alumina crucibles are inert in hydrogen and carbonaceous atmospheres and offers high resistance to alkalies and other fluxes. Suitable for glass melting, including borosilicate glass.  CoorsTek® AD-998 High-Alumina labware cylindrical-shaped crucible is made of 99.8%-pure aluminum oxide 

The CoorsTek conical crucible is an ideal thing to have in any chemical laboratories, medicinal facilities or healthcare units for a wide range of purposes such as scientific research and development.