The source heaters for the heated sources on the Thermo 5100 are available from S.I.S. Heaters include the stainless steel connectors and ceramic insulators covering the heater wire. These heaters are identical to the Thermo #50020-60006 heater and are priced significantly less than the original manufacturer.
All 5100 source heaters are repairable by S.I.S. Part # REP49