Ultimate Pressure Vacuum Pump

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MarkCorwan

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Dear All,

Appreciate if you can guide me on understanding the ultimate pressure of vacuum pump.

I have two models for review.

One has ultimate pressure of 1 x 10^-4Torr the other has 2 x 10^-3Torr.

From this can it be said that the vacuum capability of the first pump (1 x 10^-4) is better than the second pump?

Both has speed 35CFM.

Model 1 Pump WELCH 1375

Model 2 Pump PFEIFFER DUO65

Thanks for your help.

 
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