Inland ULTRA products are semi-synthetic hydrocarbon fluids designed to endure thermal and chemical stresses much better than standard vacuum pump fluids. The ultra-refined process eliminates nitrogen, sulfur, oxygen, and aromatic hydrocarbons, leaving a clear base stock virtually free of impurities. The additive package will not volatize under thermal stress; the antioxidant will stay in solution and bond up to four times as many radicals as other antioxidants, extending the life of the pump and the fluid. Properties: Good Thermal Stability Oxidation Resistant Hydrotreated Low Vapor Pressure Long Fluid Life Areas of Application: Mass Spectrometry Electron Microscopy thin Film Sputtering Vacuum Distillation and impregnation UHV Surface Analysis Vacuum Furnaces and Heat Treatment EB Welding Vacuum Tube Evacuation Vacuum Metallization Chemical Pumping Specification Inland 19 ULTRA Vapor Pressure at 25ºC (torr) | Inland Vacuum Inland 19 ULTRA Semi-Synthetic Vacuum Pump Oil