Dow704 diffusion pump oil (tetramethyl tetraphenyl trisiloxane) is used in large and medium diffusion pumps for a wide range of research and production applications, as the lower attainable pressure ...

It seems like creating a vacuum should be a pretty easy job, but it turns out that sucking all the air out of something is harder than it seems. A cheap vacuum pump will get you part of the way there, ...

If you need to create a high vacuum, there are basically two options: turbomolecular pumps and diffusion pumps. Turbomolecular pumps require rotors spinning at many thousands of rotations per minute ...

THERE has long been a need for a diffusion pump oil which, while hot, would withstand atmospheric pressure without bad effects. G. P. Brown (Rev, Sci. Inst., 16, 316 ; Nov. 1945) has found that ...

REPORTING recently on the vacuums produced by diffusion pumps, Ray and Sengupta 1 quote my statement "that the limit of pumping is set at the vapour pressure of the pump fluid at room temperature" and ...

It is not without reason that Oerlikon Leybold Vacuum can be seen as the pioneer of vacuum technology: For 165 years, the company Leybold, located at Cologne, Germany, has developed and supplied ...