Why can’t the muffle furnace be turned on at high temperature?

1. Opening under high temperature will be disadvantageous to the operator, so as to avoid scalding and heat radiation.

2. Opening under high temperature will cause cracks in the insulation material of the furnace hall and shorten the service life.

3. Opening it will cause the furnace temperature to drop rapidly and damage the heating element.

It is recommended not to open at high temperature without special experimental requirements.