The Series TM round bottom flask heating mantle is aluminum housed to provide strength and durability while supporting the weight of the vessel. Fabric interior to softly nest glass vessels and reduce the chance of thermal shock. Adaptable to most vessels including larger sizes. Withstands 450° C internal operating temperature. The TM Series can be adapted to special applications with custom sizes, bottom holes, and special electrical devices. The Series TM spherical flask mantle covers only the flask's bottom half, letting you see its full contents. Larger sizes have multiple circuits for ease of temperature control when a flask is less than half full. Splash Guards can be used with H1295-5 through H1295-11E. Poncho Safety Shields can be used with sizes 500 mL and larger. Supplied without controller.