Re: AMMRL: High pH sample with NMR tube

From: Washton, Nancy M <Nancy.Washton_at_pnnl.gov>
Date: Wed, 25 Jul 2018 02:28:03 +0000

Jinfeng,
At that pH the glass NMR tube will etch; we use Teflon inserts –
https://www.sigmaaldrich.com/catalog/product/aldrich/z286397?lang=en&region=US

The only downside is that shimming suffers a bit.


Best,
Nancy Washton

______________________________________

Dr. Nancy M. Washton
Capability Lead, Magnetic Resonance
Environmental and Molecular Sciences Laboratory
Pacific Northwest National Laboratory
3335 Innovation Boulevard
MSIN K8-98
Richland, WA 99354
Office: 509.371.7094
nancy.washton_at_pnnl.gov


From: "Lai, Jinfeng" <Jinfeng.Lai_at_p66.com>
Date: Tuesday, July 24, 2018 at 6:27 PM
To: "ammrl_at_ammrl.org" <ammrl_at_ammrl.org>
Subject: AMMRL: High pH sample with NMR tube

Hi All,

We have a customer who is interested in running NMR for neat high pH sample (with pH value around 12.5). The experiment might take about one hour to finish at 25 C.

Is this high pH sample safe for NMR tube? Is precision NMR tube resistant to this kind of caustic sample? How about economic NMR tube?

Any suggestions will be highly appreciated!

Thanks,

Jinfeng

Jinfeng Lai, Ph.D.
Senior Scientist, NMR

O: (+1) 918.977.7973
PL-150, Phillips 66 Research Center | Highway 60 & 123 | Bartlesville, OK 74003
Phillips 66




Received on Tue Jul 24 2018 - 16:28:19 MST