UW CHEMISTRY NMR
Announcments & Equipment Logs
Probeheads
UPDATE ! NEO500 – ACQUISITION ERRORS FIXED – QUEUE RESTARTED
Dear Users The acquisition related error that started around 4.30 pm of yesterday was hardware related and the system has been revived to normal functional state this morning. The queue has been restarted and the failed experiments have been resubmitted. Please check the web status page a bit later and look for your holder positions […]
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UPDATE ! NEO500 – SYSTEM BACK TO NORMAL
Dear Users The system is behaving normally now. I would request those of you, whose data does not look good to resubmit your runs with the same sample holder positions to the queue. What all you need to do is just click cancel followed by Submit again. NMR Facility Manager 9/27/23
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ALERT ! NEO500 – SYSTEM DOWN DUE TO ATMA ISSUES
Dear NMR patrons When an experiment starts, the ATMA is an important automated step as we all know. The probe’s ATMA is getting stuck leading to a long delay for processing a single sample. The automation software has a timeout mechanism so that it doesn’t stop at a single sample. So, the queued samples overnight […]
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UPDATE ! GG500 : iPROBE IS PRIMED AND READY TO GO
Dear Users Thank you for your kind patience. The probe shims up great and for those of you who are curious, here is a snapshot of the 1D proton spectrum of the so-called Lineshape standard, i.e. 1% CHCl3 in Acetone-d6. The wiggly noise flanking the central singlet of CHCl3 are mostly due to floor vibrations […]
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ALERT ! GG500 – iPROBE NOT READY YET
Dear Users Fresh from the expensive repair, the iProbe is not delivering what it promised. Although you might see Topshim seem to complete it’s job, digging deeper, it is clear that the shimming is not at an acceptable level. Since we have a narrow window of warranty for such repairs, it is imperative that we […]
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ALERT ! GG500 – iPROBE IS BACK – PROBE CHANGE TODAY
Dear Users We usually provide a day or so, when a probe swap is planned in a given instrument. This is usually the practice when the swap is done for benign reasons. An example will be moving from BB (BroadBand) capability to a specialized capability such as only-19F observation. This usually gives the BB users […]
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ALERT ! GG500 – POSSIBLE DAMAGE TO iPROBE – TXO PROBE IS IN ITS PLACE NOW
Hello All Following an unfortunate incident of a user dropping the sample tube into the magnet bore without a spinner, it turned out that the sample tube broke inside the new iProbe probehead. Being a mint condition probe, which also belongs to the latest generation, it will need careful handling in assessing the extent of […]
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SNAP POLL: GG500’s NEW BBFO iProbe – SOLICITING YOUR INPUT
Dear Users Just short of two months ago, I made an announcement about GG500 getting its own brand new fully automated BBFO probehead. Click on this link to that post, for quick reference. We ran into some technical challenges in integrating that probe with GG500, but they have been sorted out. The probe is ready […]
Posted in Probeheads, Software, Spectrometer, Usage | 1 Comment »
PREPARING FOR 500 MHz INSTRUMENT UPGRADES
Dear Users Recently, some of you might have seen a Post in this space about oncoming instrument Upgrades in the 500 MHz category. Here is a link to that roadmap, in case you missed it. To summarize : Beginning of the New Year 2023 We will be left with two modern 500 MHz spectrometers : […]
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UPDATE – AV301 : REPAIR PARTS ORDERED TO RESURRECT PROBE
Dear Users The consistently poor shim performance and the related failure to lock on a solvent after Topshim, especially for weak solvent signals such as CDCl3 is due to broken parts inside the probehead. Since this is the surrogate i.e. backup probehead, I do not have another backup probehead with Topshim capability to replace it […]
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