UW CHEMISTRY NMR

The temporary double resonance probe will give way to the TXD-19F{1H,13C} probe and the instrument should be primed and ready for use on the morning of Wednesday, the 11th. Any change in this schedule will be posted here later.

A sporadic malfunction in one of the circuit boards is causing the Lock system to behave unreliably, irrespective of the solvent you use.  A firmware reset of the board restores functionality.  The troubleshoot will be a prolonged operation due to the sporadic nature of the problem.  As of now, the Lock system is functional and […]

Preliminary observations indicate a possible damage to the insert glass inside the probehead. If it’s confirmed, we will replace the broken part  ASAP but, further shimming of the probe will be necessary to bring the lineshape to usable spec.  Look for further updates in this space.

A low level liquid N2 sensor in the LN2 evaporator assembly is damaged.   We are trying to get this replacement part as soon as possible and bring the system’s low VT capability back on track.  Further updates will be posted when the status quo changes.

Sorry for the typo in my message earlier but the low VT system is down only in AV500 and not the DRX499. Please take note.

The currently installed BBI probe with a malfunction needs to be sent for repairs.  By tomorrow afternoon this probe will be pulled out and the backup triple resonance 1H-{13C, 15N} probe will be put in place and primed.  The replacement probe should be ready by noon  on Monday, the 28th Oct ’13.  Users are requested […]

The current solutions probe will give way to the 3.2 mm Solid State MAS probe on 28th October, 2013, Monday. Solution NMR users are requested to take note and plan their runs accordingly.