As long as the layers of fiberglass cloth remain intact, the heating mantle will pose no shock hazard.
Always use with a variable autotransformer to control the input voltage.
Do not exceed the input voltage recommended by the mantle manufacturer. Higher voltages will cause it to overheat, melt the fiberglass insulation and expose the bare heating element.
Heating mantles should not be used for vacuum distillation of heat sensitive or unstable materials. It's difficult to regulate precise temperature control.
Never operate heating mantle without fluid within the flask.
