Medline Heating Mantle 250Ml 
The E-series are energy-regulated all purpose heating mantles. The time proportional double pole system allows stable control of the heating element, reducing risk of overheating liquids. The dial controller allows accurate temperature settings. The control panel is upright making them far easier and quicker to regulate the temperature. The base is more stable due to far superior design and build. Including the integral clamp for a retort stand at rear. 250ml.