[en] As a complement to a resent high-resolution spectrometric investigation of the decay of "1"9"4Au to levels of "1"9"4Pt, a similar study has been undertaken of the decay of 19-h "1"9"4Ir to "1"9"4Pt. The two decays populate a similar set of levels in "1"9"4Pt, and so the complementary investigations with similar resolution and efficiency permit a direct comparison of the two data sets. Overall there is excellent agreement between the energies of the common γ-ray transitions and also between the deduced energies of the excited states in "1"9"4Pt. The "1"9"4Ir half-life has been remeasured to be 19.20(2) h. - Highlights: • The decay of "1"9"4Ir was studied with high-resolution gamma-ray spectrometry. • Energy and intensity precisions have been improved for 64 gamma rays. • Three gamma rays previously unknown in the Ir decay were observed. • Good agreement was obtained with the corresponding gamma rays from the "1"9"4Au decay. • Energies and beta intensities were deduced for the "1"9"4Pt levels.