Standard resolution test sample: 60% benzene/40% p-dioxane.

Record a conventional ¹H spectrum.

Record a conventional ¹³C spectrum.

The calibration of the ¹³C resolution test is performed using the standard C13RESOL parameter set (the pulse program is set to pulprog zgcw30).

The test is usually performed using a sample spinning rate of 20 Hz.

o1 and o2 are set on resonance of the ¹³C and ¹H benzene resonances, respectively.

Set p1 to the 90º ¹³C observe pulse and pl14 to the low power level for ¹H decoupler pulse decoupler attenuation for continuous wave decoupling.

. Reference the benzene line to 0.0 Hz. The resolution is measured at half height of the benzene signal.

. Expand the line on which the resolution is measured.