First I will highlight that the sporadic Topshim problem is gone now and the shimming is behaving as expected.\u00a0 That should come as a relief to all of you who exclusively use 2H lock solvents other than (H2O+D2O) or (CH3OH+D2O).<\/p>\n
In the process of system troubleshoot,\u00a0 I swapped in the BBI probe and pulled out the existing TBI probe.\u00a0\u00a0 This probe is also optimized for 1H sensitivity and gives excellent signal on the samples I ran.\u00a0 You can run Topshim on this as before<\/strong>.\u00a0 And, as before, you have to tune\/match this probe by hand – NO ATMA !<\/strong><\/p>\n You are still getting a 1H sensitive broad band probe that should handle all your X-nuclei as well as 1H needs.\u00a0\u00a0 The probe is also in good condition for all your VT experiments.<\/p>\n The only change you will notice is that you have to tune\/match the 13C channel as in the old days i.e. using the Tune\/Match card and dial in 4 digits for the 13C tuning and 3 digits for the matching.<\/strong> Same is true for all the X-nuclei. If you have doubts please contact Adrienne or myself to give you a hand.<\/p>\n The TBI probe itself deserved some much needed attention on the bench, outside the magnet for a while now. The 13C tuning\/matching has been flaky and occasionally people noticed some 1H channel anomalies.\u00a0 There are a few mechanical spruce ups that are in order.<\/p>\n Using this transition, we will work to give a fresh look\/feel to the TBI probe and return it to service in the next month or so.<\/p>\n 6\/18\/2021<\/p>\n <\/p>\n","protected":false},"excerpt":{"rendered":" CURRENT STATUS : First I will highlight that the sporadic Topshim problem is gone now and the shimming is behaving as expected.\u00a0 That should come as a relief to all of you who exclusively use 2H lock solvents other than (H2O+D2O) or (CH3OH+D2O). IMPORTANT – PROBEHEAD CHANGED TO BBI In the process of system troubleshoot,\u00a0 […]<\/p>\n","protected":false},"author":19,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[11,9,7],"tags":[],"_links":{"self":[{"href":"https:\/\/depts.washington.edu\/chemwp\/chemwpnmr\/wp-json\/wp\/v2\/posts\/2474"}],"collection":[{"href":"https:\/\/depts.washington.edu\/chemwp\/chemwpnmr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/depts.washington.edu\/chemwp\/chemwpnmr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/depts.washington.edu\/chemwp\/chemwpnmr\/wp-json\/wp\/v2\/users\/19"}],"replies":[{"embeddable":true,"href":"https:\/\/depts.washington.edu\/chemwp\/chemwpnmr\/wp-json\/wp\/v2\/comments?post=2474"}],"version-history":[{"count":1,"href":"https:\/\/depts.washington.edu\/chemwp\/chemwpnmr\/wp-json\/wp\/v2\/posts\/2474\/revisions"}],"predecessor-version":[{"id":2475,"href":"https:\/\/depts.washington.edu\/chemwp\/chemwpnmr\/wp-json\/wp\/v2\/posts\/2474\/revisions\/2475"}],"wp:attachment":[{"href":"https:\/\/depts.washington.edu\/chemwp\/chemwpnmr\/wp-json\/wp\/v2\/media?parent=2474"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/depts.washington.edu\/chemwp\/chemwpnmr\/wp-json\/wp\/v2\/categories?post=2474"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/depts.washington.edu\/chemwp\/chemwpnmr\/wp-json\/wp\/v2\/tags?post=2474"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}CAPABILITIES PRESERVED :<\/h2>\n
Further Thoughts :<\/h2>\n
THE INSTRUMENT IS RELEASED FOR IMMEDIATE USE !<\/h2>\n
NMR Facility Manager<\/h2>\n