Category Archives: Uncategorized
Find z0 fixed
Find z0 has been calibrated on the I500, I400 and VXR400. So the standard procedure can be used: 1) Select solvent and experiment 2) Find z0 3) Gradient shim 4) Autolock or manual lock 5) Acquire You can still use … Continue reading
Downtime of Chemistry Spectromters
Due to lab air outage, the spectrometers in the Chemistry NMR facility will be shut down Tuesday (July 26th) morning 5:30-8:30am. Continue reading
Gem300 data access from workstations improved
The button on the top of the file tool which corresponds to the 300 is now marked with user’s three-letter username. Clicking on this button will directly access user’s home folder on gem300. Continue reading
Unstaffed July 4th
The NMR facility will be unstaffed on July 4th. Continue reading
I400 probe being repaired
The I400 4-Nucleus probe is being sent for repair. It typically take about 6 weeks for a probe repair. The PFG inverse detection probe is now in. Versus the PFG probe, this probe: – * cannot do 19F and 31P … Continue reading
Spectrometers back up
The drain valve of the air dryer went bad and needs to be replaced. A new valve has been ordered and will come soon. For time being, the old valve is used after clean up to keep the spectrometers running. Hopefully it … Continue reading
Chemistry spectrometers down
We have a problem with the lab air dryer. The spectrometers in the Chemistry NMR facility are temporarily down. Continue reading
I400 update
13C and 31P are ok, 1H and 19F work at reduced S/N and longer pulse widths. Probe default values have been updated but proton decoupling for 13C may be affected. 2D experiments should be run on the VXR400 and I500 … Continue reading
i400 back up
i400 is now back up. Continue reading
i400 unavailable
Someone broke a sample tube inside the i400 magnet. The probe and its accessory need to be uninstalled and cleaned. The spectrometer will be temporarily unavailable for 4-5 hours. Continue reading
