One 'fun' way is to place a rather expensive and sensitive balance close to the mass spec and then wonder why the damned thing will not tare when the ms is in operation.

Chris

-----Original Message-----
From: Stable Isotope Geochemistry [mailto:[log in to unmask]] On Behalf Of Arnold van Dijk
Sent: 04 February 2008 18:09
To: [log in to unmask]
Subject: Re: [ISOGEOCHEM] magnetic shield between mass spectrometers?

Hi Melanie,

I checked influence by monitoring one MS with CO2 on the side of a peak
and and have the other MS jump the magnet from zero to max (like when
you start a slow magnet scan on Thermo machines). If there's no
influence, ride the MS half a meter away and your sure.
Arnold

Melanie Behrens schreef:
> Dear all,
>
> Has anybody tried a magnetic shield between two Isoprimes or other
> mass spectrometers to avoid interference during magnet hysteresis? Is
> this possible at all or is it best to place instruments as far apart
> as possible?
>
> Best regards,
> Melanie
>