Edward vacuum pumps provide a wide range of different viscosity, different specifications of the pump oil, so that users use mechanical vacuum pump to get the best performance under different conditions. Hydrogenation processes are used to reduce the carcinogenic risk of mineral oils during production. Particularly suitable for high vacuum use, even at high temperatures can have low vapor pressure. Please refer to the detailed Mechanical Pump Features Reference for the pump oil to be used. Edward Vacuum Pumps offers Ultragrade 15, 19, 20, 70 pump oil using the new process. Using organic refining, that is, using a special hydrogenation process. The process effectively remove nitrogen, sulfur, oxygen and aromatics, leaving only the basic components of mineral oil, is the real sense of the impurity-free pump oil. With additives, the vacuum performance of the Ultragrade pump oil is further enhanced, with thermal stability, oxidation and rust protection. Anti-oxidants in Edward Vacuum pump oils allow the vacuum pump to operate at elevated temperatures without sacrificing performance, reducing the number of pump changes.