These Glas-Col® mantles help prevent vapor condensation in the upper half of a flask during distillation of high-boiling materials.

• Heating Mantle Tops protect the flask, the solution, and the laboratory in multiple ways
• Protect from stray drafts, which would disturb the reflux ratio during fractionation
• Protect from flying glass of flask implosions in high-vacuum distillations
• Protect from falling objects
• Protect from thermal strain between top and lower half of flask during high-temperature operations

The top is designed for use with CG-11000, CG-12000, or CG-125000 mantles. With a glass-fabric construction and laced-side opening, an elliptical hole accommodates a 1, 2, and 3-neck flask. All mantles are 115 volts and have a 4', 2-wire cord with locking connector.