This is a SR-2272 oxidation stability tester by RPVOT which meets with ASTM D2272 Standard Test Method for Oxidation Stability of Steam Turbine Oils by Rotating Pressure Vessel, SH/T0193 Test Method for Oxidation Stability of Lubricating Oil by Rotating Pressure Vessel and also ASTM D2112 Standard Test Method for Oxidation Stability of Inhibited Mineral Insulating Oil by Pressure Vessel. It is an important tool for determining the oxidative stability of inhibited insulating oils.