Vacuum Pump Fluids

Use the names in pump fluids you can trust!

Although there has been a major swing toward turbo molecular pumped systems and even molecular drag pumps that don't even need a roughing pump, as well as ion and other "dry" forms of pumping, there is still a surprisingly large installed base of electron microscopes, vacuum evaporators and associated instrumentation and equipment that do have diffusion pumps and therefore, require periodic changes of the pump fluids. SPI Supplies features only brand new virgin fluid purchased from the manufacturers and does not deal, as some do, with reprocessed and/or "rerefined" diffusion fluid products.

Special note to electron microscope users:
If you have a diffusion pumped system, and if you are experiencing short filament life, then it might be time for you to change the diffusion pump (or mechanical pump) fluids in the pumps. Similarly, if you have having large grain size and/or a black kind of precipitate in your chamber when evaporating metals or even carbon, that would then be yet another sign that your pump fluids need changing.

Pump fluids can be segmented either by application (e. g. mechanical pump vs diffusion pump) or by fluid type (e.g. perfluorinated polyether vs. silicone vs polyphenyl ether vs dioctyl sebacate vs. other hydrocarbon type fluids). We have segmented according to the second option so each pump fluid type will be presented separately and on a separate page:

Pump fluid types

Hydrocarbon fluids

Apiezon^® fluids

Polyphenyl ether (Santovac® 5 and Santovac^® 5P Ultra)

Dioctyl Sebacate (Octoil-S^®)

SPI LOBO™ and Welch Duo-Seal^®
Perfluorinated polyethers (Fomblin^® and Krytox^®)
Silicone fluids (Dow Corning^®)

To Ask a Question or Make a Comment

To Place an Order or Request a Quote

Friday May 09, 2008 © Copyright 1998 - 2008. By Structure Probe, Inc.
Contacting SPI Supplies and Structure Probe, Inc.
All rights reserved.
All trademarks and trade names are the property of their respective owners.
Privacy Policy

Worldwide Distributors, Representatives, and Agents Flag logo