>
> We had SIS (Scientific Instrument Services, Inc.) repair a filament for us
> about six years ago.  It was a great deal ($25) but our sensitivity was
> about half what it was with a new filament.  At the time, others had had
> the same experience.  With the price of new filaments, it would be nice to
> be able to repair filaments.  We used to repair Nuclide filaments
> ourselves.  Perhaps it is an alignment problem with the Finnigan filaments.
>  I'm curious if anyone has had better success with SIS repairs in recent
> years.

I had a similar "problem" with SIS filaments for the VG 903, maybe 4-5
years ago.  They worked, but just weren't as steady as the new ones from
Fisons.  So now we spend the money and buy new ones.


Travis Saling
Univ. of Washington