GVH UHV Heater Image Maximum Temperature: 1,400°CUHV Compatible: 5 x 10-11 mbar GV/GVL HV Rapid Heater Image Maximum Temperature: 1,500°CUltimate Pressure: 5 x 10-9 mbar Focused NIR Heater Image Maximum Temperarer: 1,500°CNIR focused with spheroid mirror