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

From this reference ¹H spectrum create a new dataset with edc and change the pulse program (pulprog zgpr). All other parameters as in the ¹H spectrum. 

Otherwhise, a standard parameter set (ZGPR) is also available. a conventional ¹H presaturated spectrum with rpar ZGPR all (the pulse program zgpr

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 achieved by other methods.