UW CHEMISTRY NMR

We are looking into the problem of ATMA and ATMM failing for the 31P selection.  Initial tests show that the symptom might spread to the 13C channel with some lock solvents.  The probe needs to be pulled out for further repairs. Once a back up plan is in place, we will announce the probe swap […]

Several of you have noticed that Topshim was failing.   Currently,  when you run Topshim, the software will not complain but the shims don’t change to give you a better lineshape or resolution. I have taken a preliminary look and will continue troubleshooting to run the problem to ground.  As of now, you have to touch […]

The BBO – Z gradient probehead is in place, optimized and ready for use.  Please remember that you CANNOT reach below 273 K (0 C) with the current setup.  You can go higher in temperature as before. If you are wondering,  in a nutshell, we had to deal with two solution NMR probe heads that […]

SYSTEM IS UP ! Thank you for your kind patience during the down time. I shall post a detailed message about VT in a following upload. For the present : The temperature system is working as expected. The noise that people had seen on the baseline, should no longer be there. I will end with […]

I apologize for this discouraging news but the temperature control is not functioning as expected and as I write this, the issue is being addressed actively.  If the problem is deemed to take more time to fix by tomorrow, I will release the instrument for use, after highlighting caveats if any.  Please pay attention to […]

The broken parts are being fixed and we will try to revive the system as quickly as we can.  The spectrometer should be operational by not later than tomorrow forenoon. NMR Facility Manager 5/17/2017

You can now : Type atma or use the Auto Wobb button to tune and match the probehead. Simply type Topshim to automatically shim the sample Please keep us posted if anything worth mentioning turns up. Thank you for your patience while we working on the fix. NMR Facility Manager 5/12/17

We still need to fine tune the hardware in ATMA probehead before it is brought to its original spec.  Therefore, currently, the probe still remains as the BBO.  You need to tune/match MANUALLY using WOBB command. You also need to SHIM MANUALLY. I will post a new message, when ATMA Probe is ready for normal […]

After servicing the ATMA probe head in-house, the unit will be tested in the spectrometer, with the hope that everything turns out well.  In that case, the ATMA probe will be back in service sometime today.  Please look for an updated post on this. NMR Facility Manager 5/11/2017