Instrumentation

Dr. J. Beau W. Webber (Lab-Tools Ltd. Ltd. (nano-science), UK)

LinkedIn: J. Beau W. Webber

Abstract: We have developed highly compact benchtop/mobile Time-domain NMR Spectrometers for physical materials-science of polymers, foods, and porous rocks.

Pore-size distributions :
Gibbs–Thomson equation for the melting point depression, Tm, for a small isolated spherical crystal, of diameter x, in its own liquid, may be expressed as [1] :

Delta T_m=T_m^infty-T_mleft(xright)=frac{4sigma_{sl}T_m^infty}{xDelta H_frho_s

Using this Cryoporometric technique, we have measured pore-volume and pore size distribution on 10 samples of North Sea sandstone porous rock, from the National Geological Repository at the British Geological Survey (UKRI).

Quantity and viscosity of bulk and the as-recovered liquids :
We have also developed a novel technique for determining quantified viscosity, using NMR T1ρ [2], and measured the quantity and viscosity of the as-recovered liquids in the  porous rocks.

References :
1. Nuclear Magnetic Resonance Cryoporometry J. Mitchell, J. Beau W. Webber and J.H. Strange. Physics Reports, 461, 1-36, 2008. DOI: 10.1016/j.physrep.2008.02.001
2. Quantified Measurements of Viscosity in The Bulk and In Pores, Using NMR Spin-lattice Relaxation in The Rotating Frame J. Beau W. Webber, Philip M. Singer, Dave M. Pickup. Quantitative NMR Journal, Vol. 1 No. 1 (2026): Volume 1, Issue 1 https://qnmrjournal.com/index.php/qNMR/article/view/8/
3. NMR spectrometers that go places others can’t. J. Beau W. Webber, David Pickup. Nat Rev Chem (2026). DOI: 10.1038/s41570-026-00851-6

Dr. Beau Webber (Lab-Tools Ltd., UK)

LinkedIn: @Beau Webber

Abstract: Take this Lab-Tools NMR TD spectrometer down off the shelf, plug it in, insert your sample, and you are up and measuring. Measure, plot and fit your results real-time in any of a number of ways, at the lab bench or from a remote location. This TD NMR spectrometer has been designed as a compact precision tool to measure quantitatively the physical properties of your sample. This TD NMR spectrometer can be used to study liquids, solids, polymers and porous materials. This gives data on sample component masses and molecular movement of the atoms and molecules, which lead to qualities which are variously described as mobility, dynamics, stiffness, viscosity or rigidity. Two NMR probes typically cover a wide range of NMR active nuclei : 1H, 19F, 11B, 7Li, 23Na. If you need variable-temperature, then plug in the Peltier thermo-electrically cooled module. -60C to +80C. This enables a wide range of materials-science measurements, and is also the basis of a thermodynamic NMR Cryoporometry system for measuring pore-sizes from nano-meters to micro-meters. In a hurry ? Or have another experiment or sample to do ? These spectrometers are priced so you can just add more on your research bench.