Dataset for Unified acidity of liquid chromatography mobile phases with methanol and acetonitrile

Dataset for article "Unified acidity of liquid chromatography mobile phases with methanol and acetonitrile". Here we report the data of 78 reversed-phase liquid chromatography-mass spectrometry mobile phases that were determined by potential differences in a symmetric cell with two glass electrode half-cells and almost ideal ionic liquid triethylamylammonium bis((trifluoromethyl)sulfonyl)imide [N2225][NTf2] salt bridge with multiple overlapping measurements. In addition, for 45 of these mobile phases, the potential difference between a glass and a double junction reference electrode were measured. Procedures used with Keysight B2987A Electrometer are given in dx.doi.org/10.17504/protocols.io.n92ld9dj8g5b/v2 and dx.doi.org/10.17504/protocols.io.byh2pt8e. For other instruments, the procedures differ by software and instrument connections.