This Thermo Scientific 250ml Flask Electrothermal Heating Mantle EMV0250/CEX1 is in used condition, has been tested and is guaranteed to be functional. This mantle came from a local lab that had surplus equipment. We urge customers to view all photos as they show overall condition, included accessories and functionality. Listing only includes what is shown in photos. Please feel free to contact us with any questions. Electrothermal EMV0250/CEX1 100 to 250ml Capacity 115V 50/60Hz, 150W Electrical Requirement Bottom opening accommodates round bottom and pear-shaped flasks and 60 funnels of various diameters Capacity between 10ml to 5 litres Coiled heating element, suspended within a thermal insulating cartridge, provides maximum heat transfer and support