• Record a conventional ¹H spectrum. Note the frequency (o1) of the solvent resonance.

From this reference ¹H spectrum create a new dataset with new and change the pulse program (pulprog zgcppr). a solvent-suppressed ¹H spectra with rpar ZGCPPR all (the pulse program zgcppr

Presaturation experiments are recorded without sample spinning.

Set o1 on-resonance to the solvent resonance to be presaturated (o1 may be finely adjusted in gs mode).

The power level and the duration of the presaturation are defined by  pl19 (start with 55 dB) and d1 (2 s), respectively.

Minimum number of scans ns=8.

(au_watersc)) (proc_1d).

 Solvent suppression can be also achieved by other methods.