NMR Lab Equipment
Introduction
The chemistry department NMR lab maintains 6 NMR instruments, plus an EPR.
They are:
Click on the icon at the right to enlarge the map of the lab.
Renovation Photos
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The Varian Inova 500, originally installed in 1989 as a Varian Unity,
was upgraded in 1996 with a new console, a third RF channel, PFG
(pulsed field gradients), and WFG (wave form generators). It is the
highest field machine in the lab.
Several probes are currently available:
- 5mm H{P-X} triple resonance, Z-axis PFG probe (usually in the magnet)
- 5mm H{C-X} triple resonance, triple-axis PFG probe
- 5mm H{X} indirect detection probe
- 5mm Broadband X{H} probe
- 10mm Lowband X{H} probe
Probe changes must be scheduled with the NMR Lab staff. Competent users can
be trained to change probes themselves.
Variable temperature is available, and lengthy experiments are permitted here.
The Varian Inova 300 was installed in 1996 and has two RF channels, PFG (pulsed
field gradients), and WFG (wave form generators). In Dec. 2003, the console was traded with the VXR-console to permit variable temperature experiments.
Four probes are available:
- 5mm 4-Nucleus (H1, C13, F19, P31) probe
- 5mm Broadband X{H} probe (usu. in magnet; X tuned to C13)
- 5mm H1/F19 probe
- 10mm Broadband X{H} probe
Variable temperature is available from -100C to +100C.
There are no gradients on this instrument. Lengthy experiments are permitted he
re.
The Varian Unity 300 was installed in 1989, and is a general-purpose 300
MHz machine. The console was upgraded to a Varian Inova console in January 2000. In Dec. 2003, the console was traded with the VI-300 console due to the incompatibility of low temperature experiments with this style of magnet.
Two probes are available:
- 5mm H{X} indirect detection, Z-axis PFG
- 5mm 4-Nucleus (H1, C13, F19, P31) probe with PFG (usually in the magnet)
Variable temperature is NOT available. There are gradients on this instrument and lengthy experiments are permitted.
The former AC-300 was
obtained originally from the now-defunct IBM Instruments in 1986; it was
upgraded with a Varian Inova console in spring 1996. In January 2000, the
console was replaced with a Unity console from the VXR-300. The VAC-300 has an
automatic sample changer attached and runs continually in automatic
mode. Users place their samples in the rack and set up the
desired experiments on the computer. It has a 4-nucleus probe, which
permits H1, F19, P31, and C13 detection.
No VT control is possible.
The experiments available include:
Set up in 1986, the VAC-200 was originally a Bruker
AC-200 but was converted to a Varian Unity 200 in 1996.
It has an automatic sample changer attached, and runs continually in automatic mode.
It has a 4-nucleus probe, which permits H1, F19, P31, and C13 detection and no
PFG capabilities. No VT control is available.
The experiments available include:
The inside of a superconducting magnet
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philson@nmr.chem.umn.edu
Last modified: Monday, 16 August 2004
