High resolution para-hydrogen induced polarization in inhomogeneous magnetic fields

► The problem of PASADENA's signal cancellation in inhomogeneous field is tackled. ► Signals are acquired with a CPMG echo train, thus preventing peak broadening. ► Results on a thermally polarized sample are unaffected by large inhomogeneities. ► Partial J-spectra in PASADENA with highly resolved lines are shown for Hexene. ► Limitations and applicability are discussed.