UW CHEMISTRY NMR

Announcments & Equipment Logs

May, 2019

(RE)INTRODUCTION OF MYSELF…

Dear NMR users/enthusiasts Although this space was created primarily to communicate about instrument related issues and the progress made to remedy those,  in the outset I will warn that this post is an unabashed advertisement of sorts about myself, but within the context of NMR only. In this day and age it makes sense to […]

Posted in NMR Applications | No Comments »

UPDATE ! AV300 : AUTOMATION SCRIPTS…

If any of you have been trying to use the automation scripts on AV300,  you might have encountered repeated failures, with some cryptic message that ends in “core dumped”. This obscure problem was related to a software bug and that has been squashed now. Commands of the type ‘multizg’, ‘iexpno’, ‘multicmd’  are a few examples […]

Posted in Spectrometer, Usage | No Comments »

UPDATE : AV700 – VT CALIBRATION COMPLETE

With the backup chiller in place, the VT calibration for the high temperature range is complete.  Now, you can simply request the temperature you need to see at the sample. The system will automatically adjust the temperature measured at the sensor to achieve this. I show below an example to demonstrate the accuracy achieved.  The […]

Posted in Hardware, Software, Spectrometer | No Comments »

ALERT ! AV700 – Ultra low T Option broken until further notice

The X-treme chiller and associated hardware that allowed us to reach low temperatures in the vicinity of -65C seamlessly, is compromised.  Until we come up with a reliable solution,  the system’s temperature range is restricted to go from -10 C to higher temperatures. Since the backup chiller unit is in place, the VT calibration values […]

Posted in Hardware, Spectrometer | No Comments »