Date: Thu, 4 Oct 2018 09:41:41 -0400
Hi Heather,
The magnet will go for at least 15 years if you have a clean room. I would
be more concerned about the electronics (Console Technology) and the
software.
In my personal experience, I've had a brand new Avance I 300 acquired in
2002 and installed in 2003 with a refurbished Biospin Magnet
(non-shielding) running until 3 months ago. It was decommissioned but the
major pain was that the highest version of TopSpin I could use was 2.1
running in Windows XP (no longer supported). IconNMR had issued that were
solved in later versions and I had to live with that. The major issue was
that the fringe fields for the magnet occupied half of the room. The
instrument was replaced by a brand new Bruker NEO 500 with an Ascend magnet
with the 5Gauss field at few cm away from the dewar. Now I have room for a
3rd magnet in the same room.
At the same time in 2002, we acquired a Demo Bruker DMS 500 MHz console
with a brand new Magnex magnet. The magnet is still running nicely (cross
my finger and knock wood). With an NSF MRI we upgraded the console in 2011
to Avance III (not HD) and we are doing great. We are running Topspin
3.5pl7 and automation is running flawless for us.
The bottom line here is that in 8-10 years your console will be obsolete.
I hope this helps.
Cheers
Roberto
On Thu, Oct 4, 2018 at 5:03 AM Heather Schenck <hschenck_at_uwlax.edu> wrote:
> I am the facility admin. for a state school/PUI with a single NMR. We
> acquired a modern 400 MHz system (gradient pulses etc.) in 2010. It
> replaced an AC-300 that was decades old.
>
>
> I'm given to understand that NMR "lifespan" is ca. 15 years (although
> obviously one can keep them longer - we sure did).
>
>
> It took us 7 tries (over as many years) to get an NSF MRI grant to replace
> our prior instrument.
>
>
> Some in my department are starting to mutter that we should be preparing
> our next MRI proposal to replace the current instrument, now 8 years old.
>
>
> What do folks think about when it makes sense to apply for a grant for a
> new instrument? Applying too soon seems like a futile exercise; I'm just
> not sure what is "too soon". On the other hand, if it takes us 7 tries to
> get the next one also, then maybe it's time to start trying.
>
>
> Cheers,
>
> Heather
>
-- [image: 1519121253192_smash-logo-header-text_sml.jpg] “The tragedy of life doesn't lie in not reaching your goal. The tragedy lies in having no goal to reach. It isn't a calamity to die with dreams unfilled, but it is a calamity not to dream. It is not disgrace not to reach the stars, but it is a disgrace to have no stars to reach for.” -Benjamin E. Mays (American educator, Clergyman, 1895-1984)- Roberto R. Gil, Ph.D. Research Professor Director, Department of Chemistry NMR Facility Co-Editor in-Chief, Magnetic Resonance in Chemistry Department of Chemistry Carnegie Mellon University 4400 Fifth Ave Pittsburgh, PA 15213 412-268-4313 412-268-1061 FAX rgil_at_andrew.cmu.edu Public Scientific Profile at https://orcid.org/0000-0002-8810-5047
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