Sample volume.

Magnetic field strength.

Solvent type.

Sample temperature.

Avoid ferromagnetic objects near the magnet.

Pacemakers are at risk near the magnet.

Only use the magnet as a hand rest when shimming.

Do not lean on the NMR magnet

Use non-deuterated solvents.

Use concentrated solutions to suppress signals.

Consider solvent signals when analyzing spectra but not to calibrate spectra

Consider solvent signals when analyzing spectra AND to calibrate spectra

Residual solvent signals from deuterated solvents come from the remaining protons after deuteration

Select a suitable deuterated solvent: solubility, placement of residual solvent signal..

Permanent loss of superconductivity.

Electrical shock.

Rapid release of cryogens.

Magnet quench.

Requires manual adjustment of field gradients.

It automates magnetic field corrections.

Improves spectral resolution, preventing broadening of peaks.

Performed via software interface.

Evacuate the area.

Increase cryogen flow manually.

Avoid re-entering until safe.

Continue experiments after the quench.

Ensure the solution (within the region of the RF coils ) is clear and homogeneous.

Use a sample depth gauge.

Use 5 mm NMR tubes: 7 inches or 8 inches.

Solubility in deuterated solvent is key factor in solvent choice

Dissolve the sample in a non-deuterated solvent.