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Roughing Pumps

The Role of Backstreaming in Vacuum Contamination

In vacuum work, contamination problems are often blamed on the obvious suspects: leaks, dirty parts, bad materials, or poor cleaning. Those are all real causes. But one contamination source is easy to underestimate because it can come from inside an otherwise functional pumping system: backstreaming.
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Which Roughing Pump Is Right For My Application?

A roughing pump is a vacuum pump used to evacuate a vacuum system to achieve a high vacuum or ultra-high vacuum. The term roughing-pump is gotten from the range it operates in, 0.1 Pa. There are two categories of roughing pumps, dry and oil-sealed roughing pumps. There are different types of designs you can pick from the two categories.
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