Just a quick follow-up to Luke's comment: If you are removing the jacks and
cleaning them, you can avoid a minor headache by ensuring that whatever
holder spot is moving to the sample transfer position *does have* a jack in
position. We made the mistake of trying to take all of them out at once.
When a spot without a jack hit the sample transfer position, the Case
refused to continue to rotate to the next spot. We had to 'trick' the
sensors to get the spot without a jack into a position where we could
easily get the jack back in place.
Peter
On Mon, Dec 1, 2025 at 1:18 PM Fulton, Luke via groups.io wrote:
> Hi TJ,
>
> Thinking long term, accumulated residues increase friction and interfere
> with smooth action. Gentle cleaning with isopropanol removes leavings from
> broken samples and greasy fingers. Those white tubes (jacks?) are fully
> removable and it's easy to give them a quick scrub if things ever get
> sticky.
>
> Kind regards,
> Luke
>
>
> Luke Fulton, PhD CHEM BLDG R003
> NMR Core Facility Director Unit 3060
> COR2E & Department of Chemistry 55 N Eagleville Road
> University of Connecticut Storrs, CT 06279
>
> email: fko24003_at_uconn.edu
> (alias): luke.fulton_at_uconn.edu
> mobile: (603) 953-5275
> Office: (860) 486-4069
> ------------------------------
> *From:* main_at_ammrl.groups.io on behalf of Thusitha Jayasundera via groups.io
> *Sent:* Monday, December 1, 2025 9:32 AM
> *To:* main_at_ammrl.groups.io <main_at_ammrl.groups.io>
> *Subject:* [AMMRL] Sample case error: sample not dropping all the way
>
>
> Hello all--our Prodigy 500 MHz system has recently been having a sporadic
> error because the completed sample doesn't drop all the way to the sample
> case (please see attached figure).
>
> The problem can occur in manual mode or when running Icon. A simple tap on
> the white sample insert drops the sample down to the case, but a restart is
> always required to return to normal operation. The problem initially
> occurred several times while on manual mode (requiring a full restart of
> the system), and just once since then while on Icon, which was resolved by
> a restart of just the sample case.
>
> For more context, we have had this sample case since May, and the problem
> started ~3 weeks ago. In contrast, the issue has never occurred on our
> second 500 MHz system which is identical to this one except for having a
> regular helium cryo probe.
> Has anyone encountered this problem, and perhaps found a remedy? Any
> advice would be much appreciated, and as always, many thanks in advance!
>
> TJ.
>
>
>
>
>
--
*Peter Thompson, Ph.D.*
Lead Research Scientist, Macromolecular NMR, Molecular Education,
Technology and Research Innovation Center (METRIC)
Research Assistant Professor, Department of Molecular and Structural
Biochemistry
North Carolina State University
51 Polk Hall
Raleigh, NC 27695
Phone: 919.515.0836
Email: pmthomps_at_ncsu.edu
METRIC Website: https://research.ncsu.edu/metric/home
Consultation and Sample Submission: https://labs.ncsu.edu
Biochemistry Website:
https://cals.ncsu.edu/molecular-and-structural-biochemistry/
“All electronic mail messages in connection with State business which are
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Received on Mon Dec 01 2025 - 11:35:29 MST