As announced in August (cf Mail August 17), after repeated strong contamination build-up in NMR probes within very short time periods, we have enforced more stringent controls of NMR tubes submitted to our open access instruments. This procedure, which we imposed to avoid wear and costly/time-consuming repairs of very expensive research instrumentation, will therefore stay in effect for the same reason and last but not least after our recent experiences.
However, since we did notice that users (in spite of our announcements) seemed to be overwhelmed by our new measures, we gave some thought to those additional sanctions that were recently introduced and would like to communicate the following adjustments:
(1) As of now, each user who is caught having submitted a contaminated NMR tube will receive one single warning upon breaking our regulation. In such case, we will confiscate the tube, the user will have to pick it up at the NMR facility and needs to undergo a new instruction. Thereby, we will discuss the problem and show how to avoid it in the future. No further sanction will become active at that point.
(2) If there is any repetition, i.e. a user submits after the aforementioned warning another soiled tube, he will be banned for a period of 2 weeks from all open access instruments.
(3) All sanctions that are currently effective with respect to contaminated NMR tubes are changed into the "free shot" mentioned in (1). Respective users affected by that regulation will receive a separate E-Mail.
We would like to remind all of you that we needed to take these more restrictive steps for good reasons. This means, the origin cannot be waived and we are still considering to suspend open access in our facility entirely if problems with disregarding of our etiquette continue to exist.
Also, we are perfectly aware that a majority of users only submits clean and accurately prepared NMR samples. We would like to express our honest appreciation for their careful handling of the instrumentation at this point.
28.10.2018 - NMR facility: "Soiled NMR tube sanctions" - important message