Hello All,

We are running a vacuum ion source (it accepts CO2 samples) with Leybold 
turbo pumps.  The ion source manufacturer claims that there is a bad batch: 
we know of several pumps that have failed after a year or less in service.

Is anybody else using Leybold turbos, and are you finding a similar 
premature failure?

Thanks in advance.

Irene Ellis
IsoTrace Lab
University of Toronto
(416)978-4041