Calorimeter - Electric (304-2) The cover contains a mounted heating coil of about 1.5 ohms resistance with standard binding posts for electrical connections. When connected to a 6-volt battery, this coil will cause a temperature rise of about 5 degrees Centigrade in 10 minutes. The supporting posts and coil are coated to prevent electrolysis. Comes complete with insulated handle on stirrer and single - hole rubber stopper. Qty :