30 mL Bellwether Porcelain Crucible with Lid
- High-form laboratory crucibles are glazed inside and out the base is unglazed.
- They are fired at 1205 °C and tested at 1100 °C
||Outside Rim Dia.
- Porcelain is oven-heated to 1100 °C (2012 °F)
- Cooled to 400 °C (752 °F) in oven
- Removed from oven and further cooled to 20 °C (68 °F).
- Cycle repeated at least three times to pass