Porcelain Crucibles, Tall Form with Cover

Crucible Tall Form

Tall form crucibles include covers. Crucibles are glazed on inner and outer surfaces except for the outside bottom and rim.

Autoclavable. Withstand temperatures to 1150° C. To prevent thermal stress cracks, we strongly recommend a heating/cooling rate not exceeding 200° C per hour. United porcelain crucibles offer excellent resistance to acids and alkalies except for hydrofluoric acid.

Thermal Shock Resistance - average coefficient of expansion from 20° C to 200° C is 3.56 x 10-5, gradually increasing to 4.69 x 10-5 at 1050°C. Every batch of porcelain is heat tested in our factory.

• Glaze - No softening occurs up to 1000°C, and it is extremely white.
• Resistance to Chemical Action - Resistance to acids and alkalies is excellent, except for hydrofluoric acid.